The earliest Christian creed fit into two Greek words.
Kyrios Iēsous. Jesus is Lord.
It does not look like much on the page. Two Greek words — three in English, because Greek leaves the verb implied. But in the first century, that confession could cost you everything you had, including your life. The reason it could is that the title belonged to two other people, and the early Christians said it belonged to Jesus instead.
The first was Caesar. Kyrios Kaisar was the Roman emperor’s title in the eastern provinces, and the cult of emperor worship was no joke. By the late first century, refusing to confess Caesar as kyrios — which often meant burning a pinch of incense before an emperor’s image — was a public crime. To say “Jesus is Lord” was to imply that Caesar was not, and Roman governors had ways of finding out who was implying what.
The second was God Himself. When Jewish translators rendered the Hebrew Bible into Greek two centuries before Christ, they reached for kyrios whenever the Hebrew said YHWH — the divine Name, the four-letter Name the rabbis would not even pronounce. Every time a Greek-speaking Jew read the Bible aloud and came to that Name, they said kyrios. By the time the New Testament was written, kyrios and YHWH were the same word in two languages — for Jews, anyway. To say “Jesus is Kyrios” was to say He bore the divine Name.
Two Greek words. Two terrible implications. One creed.
The Word
κύριος (kyrios), pronounced KOO-ree-os. A second-declension masculine noun. The family includes the verb kyrieuō — to rule, to exercise lordship — and the adjective kyriakos, “belonging to the Lord,” which gives us “Lord’s Day” and “Lord’s Supper” in our Bibles.
The word has a wide range. In ordinary first-century Greek, kyrios could mean almost anything from a polite “sir” to a household master to a governing official to a god. Slaves called their owners kyrios. Wives sometimes called their husbands kyrios. Children called their fathers kyrios. It was a word of respect first, of authority second, of divinity third — and which sense was in play depended entirely on who was speaking to whom about what.
What made the word load up theologically was the Septuagint. When the seventy translators rendered the Hebrew Bible into Greek, they had a problem. The divine Name — the tetragrammaton YHWH — appears thousands of times in the Old Testament. The translators chose not to render it as a name at all. They chose a title. Kyrios. From that moment forward, in Greek-speaking Judaism, kyrios with the definite article (ho kyrios, “the Lord”) meant YHWH unless context indicated otherwise. The word kept all its ordinary uses; it also picked up the heaviest possible theological weight. Context governed which one was in play.
This is the background a Greek-speaking first-century Jewish Christian was reading the New Testament against. When Paul calls Jesus kyrios, the word’s whole semantic range comes with it — but the Septuagint reading is the one that matters most.
Range of Meaning
Kyrios in the New Testament covers a wide field:
- Sir, as an honorific address. The polite “sir” of someone you respect but do not yet recognize. Mary at the empty tomb calls the unrecognized Jesus kyrios in John 20:15 — “Sir, if you have carried him away…”
- Master, owner, proprietor. A slave’s address to his owner; the master of a household; the owner of an animal or a piece of property. Jesus’ parables are full of this sense.
- Ruler, governing official. A title for those with authority.
- A god, in pagan usage. Greek gods and goddesses were kyrioi and kyriai to their devotees. Caesar took the title to himself.
- The Lord, meaning YHWH. The Septuagint convention. Quotations of the Old Testament in the New Testament routinely carry this sense.
- The Lord, meaning Jesus. The primary New Testament use, and the one that absorbs and reshapes all the others.
The interpretive question for any given verse is: which sense is the speaker using? When Sarah calls Abraham kyrios in 1 Peter 3:6, it is the marital-respect sense. When the servants in the parable of the talents address their master as kyrios (Matt 25:20), it is the household sense. When Paul writes that there is “one Lord, one faith, one baptism” (Eph 4:5, NET), he means Jesus, and he means it in the fullest sense the word can carry. Context tells you.
Where You’ll Meet It
“As a result God highly exalted him and gave him the name that is above every name, so that at the name of Jesus every knee will bow —in heaven and on earth and under the earth— and every tongue confess that Jesus Christ is Lord to the glory of God the Father.” (Philippians 2:9–11, NET)
The high-water mark of kyrios in the New Testament. Paul is quoting Isaiah 45:23 — a passage in which YHWH Himself swears, “Surely every knee will bow to me, every tongue will solemnly affirm.” In Isaiah, the One to whom every knee bows is YHWH; in Philippians, it is Jesus. Paul is not being subtle. He is applying a passage about YHWH to Jesus and asking the reader to draw the obvious conclusion.
“because if you confess with your mouth that Jesus is Lord and believe in your heart that God raised him from the dead, you will be saved.” (Romans 10:9, NET)
This is as close as the New Testament gets to a definition of Christian conversion: the verbal confession that Jesus is Kyrios, paired with faith in the resurrection. Notice what Paul does not say. He does not say “make Jesus Lord of your life.” He says: confess what is already true. The Lord is the Lord. You either say so or you do not.
“For everyone who calls on the name of the Lord will be saved.” (Romans 10:13, NET)
Four verses later, Paul quotes Joel 2:32 — “It will so happen that everyone who calls on the name of the Lord will be delivered.” — and applies it to calling on Jesus. The seam is invisible. Paul has been talking about Jesus the whole time. He drops the Joel quotation in as if it has been obvious all along that the kyrios on whose name the saved call is Jesus. For Paul, it is obvious.
“So I want you to understand that no one speaking by the Spirit of God says, “Jesus is cursed,” and no one can say, “Jesus is Lord,” except by the Holy Spirit.” (1 Corinthians 12:3, NET)
The confession is itself a gift. Making this confession is not a feat of religious effort; it is the natural speech of someone the Spirit has given new life. Faith is not what you do to make Jesus Lord. Faith is what the Spirit gives you to confess what Jesus already is.
“Not everyone who says to me, ‘Lord, Lord,’ will enter into the kingdom of heaven—only the one who does the will of my Father in heaven.” (Matthew 7:21, NET)
The warning verse. Saying the word and meaning the word are not the same. Jesus is warning against the use of the title as a verbal token without the corresponding life. The point is not that the verbal confession does not matter — Romans 10:9 still holds — but that the confession must be a real one. A kyrios who does not rule in any actual sense is not a kyrios at all.
What Confessional Lutherans Hear
Where other traditions hear kyrios in a single register, the confessional tradition hears two notes at once.
First, calling Jesus kyrios is calling Him God. Lutherans hold this very tightly because it grounds the whole two-natures Christology explored in the entries on Pleroma, Kenoo, and Monogenes. Jesus is kyrios in the full Septuagint sense — He bears the divine Name. The Word made flesh is not a new creation God added to His repertoire; He is the eternal Son who has always shared the Father’s divinity. If Jesus is not kyrios in this fullest sense, the cross does not pay an infinite debt and the resurrection does not vindicate a divine claim. Some modern theologies have softened this — treating “Lord” as a title of exalted status conferred on Jesus by God rather than as a confession of His shared divine identity. Lutherans push back. The exaltation passages (like Philippians 2) are not about Jesus becoming God; they are about Jesus, who was always God, being publicly vindicated and acknowledged as such.
Second, lordship is gospel, not law. There is a movement in Reformed and Evangelical circles, going back to debates in the late twentieth century, that frames “making Jesus Lord of your life” as a condition for saving faith — sometimes called “Lordship salvation.” The argument is well-intentioned: it pushes back against cheap-grace evangelicalism that lets converts off the hook for any actual obedience. But the framing turns lordship into a work. The Lutheran response is that lordship is not what we do to make Jesus Lord; lordship is what is already true about Jesus, which the Spirit gives us the gift of confessing. The confession is the response of faith, not a condition added to faith. He is Lord whether or not you have made Him Lord, and your faith is not the act that crowns Him.
This is why, in our liturgies, the assembly says “Lord, have mercy” without flinching. We are not granting Him the title. We are acknowledging what is already the case. The Kyrie eleison of every Sunday morning is the church confessing the world’s truth in advance of the day when the world will confess it under compulsion.
The pastoral payoff: when you wake on Tuesday morning and your faith feels thin, you have not unmade Jesus’s lordship. He is still Kyrios. The Word of the Lord still does what the Word does. The Spirit still gives the confession when you cannot summon it on your own. The lordship is His. Your job is to keep showing up where it is preached and confessed.
Where People Get It Wrong
Several common ways.
The first is the Lordship-salvation framing we just named. “You have to make Jesus Lord of your life to be saved” sounds biblical and is not. The verb does not work that way. We confess Him as Lord; we do not crown Him. The Spirit gives the confession; we do not generate it. Faith receives. It does not negotiate terms.
The second is the everyday-to-divine slip. Because kyrios runs from “sir” to “YHWH,” there is a temptation to read divinity into every occurrence. When a slave addresses his owner as kyrie, he is just saying “master.” When Sarah calls Abraham kyrios in 1 Peter 3:6, she is not making a christological confession — she is being respectful in a way ancient households would recognize. Context governs. Most uses of kyrios in the New Testament are the divine sense (because the New Testament is mostly about Jesus), but not all. Reading every kyrios as a divine title is illegitimate totality transfer — importing a word’s full range of meanings into a single occurrence —, applied to one of the words where it is most tempting.
The third is the reduction of kyrios to “boss” or “master” without the divine weight. This is the opposite mistake. Some modern translations and devotional treatments use “Master” or “Sovereign” instead of “Lord” because they think “Lord” sounds quaint. The cost of the substitution is enormous. “Master” is a relational title; Kyrios (in its divine sense) is the divine Name. When we lose the connection between kyrios and YHWH, we lose what the early creed was saying. Jesus is not just our boss. He is our God.
The fourth is the therapeutic refusal of “Lord” altogether. Some modern liturgies and prayers avoid the word because it sounds authoritarian or patriarchal — too much like the king and not enough like the friend. The gospel point is exactly the opposite. This Kyrios is the one who washed His disciples’ feet, who came to serve and not to be served, who emptied Himself (Phil 2:7 — see Kenoō) before He was exalted. The Lordship of Christ is the Lordship of the Lamb. Refusing the word does not get you closer to the gospel; it gets you further.
So What
Confessing Jesus as Lord has always been costly. In first-century Asia Minor, it cost some Christians their lives. In modern North Dakota and most of the contemporary West, it costs you something different — you will be considered narrow, exclusivist, naïve, perhaps slightly embarrassing at the office holiday party. That is a small cost compared to the lions. It is still a cost. The word still does what the word does.
When you confess “our Lord” in the Creed, you are calling on the divine Name. When you sing “Lord, have mercy” on Sunday morning, you invoke Jesus as Lord with the church’s ancient confession in view. When you teach a child the words “Jesus is Lord,” you are handing on the first thing the church confessed and the last thing it will confess at the end of the age.
The Lord is the Lord. The Spirit gives the confession. The cost is what it always was, and so is the comfort.