ὑπόστασις

There is a famous verse near the beginning of Hebrews 11 that English Bibles translate in conspicuously different ways.

The King James Version reads:

“Now faith is the substance of things hoped for, the evidence of things not seen.” (Hebrews 11:1, KJV)

The English Standard Version reads:

“Now faith is the assurance of things hoped for, the conviction of things not seen.” (Hebrews 11:1, ESV)

The New International Version reads:

“Now faith is confidence in what we hope for and assurance about what we do not see.” (Hebrews 11:1, NIV)

Substance, assurance, confidence — three quite different English words used to translate the same Greek term. The translators are not being arbitrary; they are wrestling with a single Greek word that has substantial breadth of meaning. The word is hypostasis. And the differences among English translations of Hebrews 11:1 reflect a genuine lexical and theological difficulty about what the writer to the Hebrews actually meant — a difficulty that has occupied commentators since the patristic period.

This chapter is on hypostasis, the second of Part VII’s three chapters on hope and last things. The word is one of the most theologically loaded in the New Testament’s vocabulary. It appears five times — three times in Hebrews (1:3, 3:14, 11:1) and twice in 2 Corinthians (9:4, 11:17) — but its significance for Christian theology far exceeds its frequency. The word became, in the patristic period, one of the foundational terms of orthodox doctrine. Hypostasis was the word the church chose for “person” in the doctrine of the Trinity — three hypostases in one essence — and for the union of natures in the incarnation — Christ as one hypostasis in two natures. When the Council of Chalcedon defined orthodox Christology in AD 451, hypostasis was at the center of the definition that has remained the standard of orthodoxy ever since.

The chapter has two main tasks. The first is to work through the New Testament’s actual usage of hypostasis — what the word meant, what it covered, and why the translations vary. The second is to show how the word became foundational in the church’s developing doctrine of Christ and the Trinity, and what implications this has for the believer’s hope and assurance. The chapter sits in Part VII because the believer’s hope ultimately rests on the hypostasis that Christ both has and is — the standing-under, the foundation, the underlying reality that gives faith its substance.

The Word

ὑπόστασις (hypostasis), pronounced hoo-POS-tah-sis. A feminine noun. A compound of hypo (ὑπό, “under, beneath”) and stasis (στάσις, “a standing” — from histēmi, “to stand”). The literal etymology is “a standing under” — that which stands beneath, supports, underlies, holds up.

The English reader can hear this etymology directly. The Latin equivalent is substantia, a compound of sub (“under”) and stantia (“standing”). The same metaphor in two languages: that which stands under, the substance, the basis on which something rests. The English word “substance” descends from Latin substantia and preserves the same conceptual structure as the Greek hypostasis. When we say something has “substance” in English, we are using a word whose ancestor in Latin and whose grandfather in Greek both pictured the underlying reality that holds something up.

The family is small but theologically loaded:

• hypostasis (the noun, with the range of meanings developed below).
• hyphistēmi (ὑφίστημι, the verb form, “to stand under, to take a stand, to subsist”) — used occasionally in the New Testament for steadfastness or for taking a position.
• hypostēnai (the related infinitive of the verb).

The classical and Hellenistic Greek background of hypostasis is rich and varied. The word had developed two main streams of usage by the New Testament period.

The first stream was philosophical and ontological. In Aristotle and the Aristotelian tradition, hypostasis came to be used for substance in the metaphysical sense — that which has actual existence, the underlying reality that supports particular qualities and attributes. The Stoics used hypostasis for reality as opposed to appearance — that which actually exists rather than merely seems to exist. This usage is the lexical background for the technical Christian theological development that would come later.

The second stream was practical and psychological. Hypostasis came to be used for firm standing, confidence, settled disposition — the kind of standing that allows a person to make a claim, take a stand, or hold a position. A military commander has hypostasis in his position. A merchant has hypostasis in his commercial standing. A man has hypostasis in the firmness of his commitment to his word. This usage is the lexical background for the New Testament’s repeated use of hypostasis for the believer’s confidence or assurance.

The Septuagint background is more limited. Hypostasis appears in the LXX for a variety of Hebrew terms involving foundation, substance, or duration, but it is not a major Old Testament theological term in the way that other words we have treated (like charis, pistis, agapē) are. The New Testament writers seem to be drawing primarily on the Greek philosophical-practical background rather than on a developed Old Testament Hebrew tradition.

Range of Meaning

In its New Testament usage, hypostasis covers a wide range. Two distinct primary senses can be distinguished:

The first sense is substantive or ontological — that which stands under, the underlying reality, the essential nature or being of a thing. This sense is at work in Hebrews 1:3, where hypostasis names the divine being of which Christ is the exact imprint.

The second sense is subjective or psychological — that which gives one a firm standing, confidence, settled assurance. This sense is at work in Hebrews 3:14 (“our original confidence”), 2 Corinthians 9:4 and 11:17 (the confidence of boasting), and possibly Hebrews 11:1 (“the assurance of things hoped for”) in its primary modern reading.

The two senses are connected. The subjective confidence rests on objective reality. The believer’s assurance has substance because what it grasps has substance. The hypostasis the believer holds — whether translated as confidence or as substance — is grounded in the hypostasis that Christ Himself is. This is one of the threads the chapter will develop.

Beyond these two New Testament senses, the patristic development of hypostasis into the technical term for “person” in Trinitarian and Christological doctrine gives the word a third major sense — the sense in which it has been used in orthodox Christian theology for the past 1,600 years. This usage is not yet present in the New Testament texts themselves but builds on the substantive sense of New Testament hypostasis in passages like Hebrews 1:3.

Where You’ll Meet It

“He is the radiance of the glory of God and the exact imprint of his nature, and he upholds the universe by the word of his power. After making purification for sins, he sat down at the right hand of the Majesty on high…” (Hebrews 1:3, ESV)

The substantive use. “His nature” translates tēs hypostaseōs autou — “his hypostasis.” Christ is the charaktēr — the exact stamp or imprint, like the impression a seal makes on wax — of God’s hypostasis. The image is concrete: Christ bears the imprint of God’s own being in such a way that to see Christ is to see God. Hebrews 1:3 is one of the foundational New Testament texts for the deity of Christ, sitting alongside John 1:1, Philippians 2:6, and Colossians 1:15–20. Christ is not merely a creature who reflects God’s character at a distance; Christ bears the very imprint of the divine being itself. The Greek word charaktēr (from which the English “character” descends) was used for the imprint a die makes on a coin — exact, precise, of the same substance as what stamped it. Christ is to God the Father what the imprint on a coin is to the die that stamped it: not a different reality but a precise impression of the same.

This verse was foundational in the patristic Trinitarian debates. The Arians, who taught that the Son was a creature subordinate to the Father, had to deal with this verse and the others like it. The orthodox response, formalized in the Nicene Creed, was that the Son is “of one substance” (homoousios) with the Father — sharing the same divine being, not a created likeness of it. Hebrews 1:3 is one of the New Testament texts that drove the church toward the Nicene formulation.

“For we have come to share in Christ, if indeed we hold our original confidence firm to the end.” (Hebrews 3:14, ESV)

The subjective use. “Our original confidence” translates tēn archēn tēs hypostaseōs — “the beginning of our hypostasis.” The believer’s hypostasis is the firm standing he has in Christ from the time of his initial faith. The exhortation is to “hold” this hypostasis firm to the end — to maintain the original confidence that the gospel produced when faith first took hold. The author of Hebrews uses hypostasis here in the psychological-confidence sense: the believer’s settled assurance, his firm standing in Christ, his unwavering commitment that must be maintained through the trials of Christian life.

This verse connects directly to the chapter on parrhēsia (Chapter 41). The parrhēsia of confident access to God and the hypostasis of firm standing in Christ are two angles on the same gospel gift: the believer has been given a position before God through Christ, and that position — confidence to approach, firmness to hold on — is the substance of Christian assurance.

“And let us hold fast the confession of our hope without wavering, for he who promised is faithful.” (Hebrews 10:23, ESV — closely related passage, though using a different Greek word)

“For you have need of endurance, so that when you have done the will of God you may receive what is promised…” (Hebrews 10:36, ESV)

The broader Hebrews context. The letter as a whole is concerned with the believer’s perseverance in faith through trial. The hypostasis language in Hebrews 3:14 and the related encouragements throughout the letter all work in the same direction: the believer must hold firm to what he has been given.

“Now faith is the assurance of things hoped for, the conviction of things not seen.” (Hebrews 11:1, ESV)

The famously contested verse. Estin de pistis elpizomenōn hypostasis — “Now faith is hypostasis of things hoped for.” The translation difficulty is real.

The objective reading (favored by the King James tradition, by Calvin, and by some patristic interpreters) takes hypostasis in the substantive sense: faith is the substance of things hoped for — faith makes the hoped-for realities present, real, accessible in the present moment. On this reading, faith is not merely a subjective state of the believer; faith is the substantial grasp of realities that, apart from faith, would be merely future. The believer who has faith already has, in a real sense, the substance of what he hopes for.

The subjective reading (favored by most modern translations and by much modern scholarship) takes hypostasis in the confidence sense: faith is the assurance of things hoped for — faith is the believer’s settled conviction about realities he cannot yet see. On this reading, hypostasis names the believer’s confident stance, paralleling the elenchos (“conviction”) in the second half of the verse.

Both readings are defensible. The Greek word carries both senses, and the writer to the Hebrews may have intended both at once. Luther’s German translation reads Es ist aber der Glaube eine gewisse Zuversicht des, das man hofft — “Faith is a certain confidence of what is hoped for” — which captures the subjective dimension, though Luther’s broader theology preserves the substantive dimension as well. The Lutheran tradition has generally followed the subjective reading at the level of translation while maintaining that the assurance has objective ground.

What the verse cannot mean: faith as wishful thinking, vague optimism, or self-generated emotional state. Whether we translate it “substance” or “assurance,” the verse is naming a faith that has weight, that grasps something real, that stands on what stands. Faith is not the believer’s feeling that things will turn out; faith is the believer’s grasp on what Christ has accomplished and what God has promised.

“For if some Macedonians come with me and find that you are not ready, we would be humiliated — to say nothing of you — for being so confident.” (2 Corinthians 9:4, ESV)

Paul on the collection for Jerusalem. “Confident” translates tē hypostasei tautē — “in this hypostasis,” in this firm standing or confidence. Paul has been boasting to the Macedonians about the Corinthians’ readiness to give; if the Corinthians fail to come through, the hypostasis of Paul’s boasting will be exposed as empty. The use is clearly the subjective sense — confident standing, firm commitment, the basis on which one makes a claim.

“What I am saying with this boastful confidence, I say not as the Lord would but as a fool.” (2 Corinthians 11:17, ESV)

Paul again. “Boastful confidence” translates en tautē tē hypostasei tēs kauchēseōs — “in this hypostasis of boasting.” The use again is the subjective sense — the firm standing or settled stance from which Paul speaks. Paul recognizes that his boasting is foolish but presses on because the Corinthian situation requires it.

The two 2 Corinthians passages confirm that the subjective use of hypostasis — confident standing, firm settled stance — was readily available to New Testament writers. The Hebrews uses of hypostasis in 3:14 and 11:1 fit within this same usage pattern, while Hebrews 1:3 reaches back to the substantive/ontological sense for the deity of Christ.