Adonai Echad is Hebrew for the Lord is one. The phrase comes from the Shema, Israel’s daily confession in Deuteronomy 6:4. Adonai is the reverent way Jewish readers say the divine name (the Tetragrammaton, YHWH, often rendered Jehovah or LORD), and echad is the Hebrew word for one. Together they confess that the LORD alone is God and that He is one, not many. That confession stands at the heart of biblical faith and is quoted by Jesus Himself in Mark 12:29. This article explains each word, how the Shema is used in Scripture, and why the phrase still matters for how Christians speak about God.
What does each word in Adonai Echad mean?
Adonai is a Hebrew plural of majesty meaning my Lord or the Lord. Jewish readers, out of reverence, would not pronounce the four-letter divine name written in the text (YHWH). When they came to it, they said Adonai instead. Over time, English translations marked that name with small capitals: the LORD. So when you see Adonai in a Jewish prayer, it usually stands in for the covenant name itself.
Echad is the ordinary Hebrew word for one. It can mean a single item, but it also describes a unity of parts. In Genesis 2:24, for example, husband and wife become one flesh — two persons joined as one. So echad does not by itself force either a strict mathematical unit or a compound unity; the context decides. In the Shema, the point is that the LORD is uniquely God and there is no other.
The full phrase, then, is a confession: the Lord, the one true God, is one. It is not a magic formula or a name to invoke; it is a statement of who God is.
Where does the Shema come from, and why is it so important?
The Shema takes its name from the first Hebrew word, shema, meaning hear. It begins in Deuteronomy 6:4 and continues into the command to love God with all the heart, soul, and strength. It became Israel’s morning and evening confession, a way of binding the people to the one God in a world of many gods.
Hear, O Israel: The LORD our God, the LORD is one. — Deuteronomy 6:4 (BSB)
Love the LORD your God with all your heart and with all your soul and with all your strength. — Deuteronomy 6:5 (BSB)
Jesus Himself quoted this passage as the greatest commandment. When a scribe asked which command was first, He answered with the Shema and its call to love God completely.
Jesus replied, “This is the most important: ‘Hear, O Israel, the Lord our God, the Lord is One. — Mark 12:29 (BSB)
Love the Lord your God with all your heart and with all your soul and with all your mind and with all your strength.’ — Mark 12:30 (BSB)
So the phrase is not a side detail. It is the ground of both testaments: there is one God, and He is to be loved wholly.
Does one in Adonai Echad hint at the Trinity?
Some Christians have pointed to echad as allowing for a compound unity, and so as a hint of the Trinity. Others reply that echad is simply the normal word for one and that the Shema is mainly a declaration that the LORD is the only God. Both concerns are worth hearing.
The Bible everywhere insists that God is one. Isaiah records the LORD’s own words:
I am the LORD, and there is no other; there is no God but Me. I will equip you for battle, though you have not known Me, — Isaiah 45:5 (BSB)
At the same time, the New Testament speaks of the Father, the Son, and the Holy Spirit as divine persons, and Christians have long confessed one God in three persons. Paul can write of one God, the Father, and one Lord, Jesus Christ, in the same breath (1 Corinthians 8:6), holding together the oneness of God and the deity of Christ. The Shema does not by itself teach the Trinity, but it does not contradict it either. It sets the foundation: there is one God, and He alone is to be worshipped.
How is the divine name behind Adonai handled in the Bible?
The four Hebrew letters YHWH appear thousands of times in the Old Testament. Jewish tradition read them as Adonai, and English Bibles have usually followed one of two paths. Many translations print the LORD in small capitals to signal that the Hebrew has the divine name. Others, especially older English versions, use the form Jehovah. The American Standard Version of 1901 uses Jehovah throughout the Old Testament, while the King James Version uses it in a handful of places.
For example, the ASV renders the Shema’s opening this way:
Hear, O Israel: Jehovah our God is one Jehovah. — Deuteronomy 6:4 (ASV)
The difference between LORD, Jehovah, and Yahweh is a matter of how translators represent the same Hebrew name. The meaning of Adonai Echad does not depend on which convention a Bible uses; the confession is the same.
What does Adonai Echad mean for everyday faith?
First, it tells us who we are addressing. When we pray, we are not casting words into the dark or hoping one god among many will answer. We come to the one Lord, the God of Israel, who has made Himself known.
Second, it calls for wholehearted love. The Shema does not stop at the LORD is one; it moves straight to loving Him with all the heart, soul, and strength. Knowing that God is one means He deserves an undivided loyalty — not a share of our attention alongside rivals.
Third, it shapes how we read the rest of Scripture. The one God of the Old Testament is the God and Father of Jesus Christ, and the New Testament church kept confessing one God even as it worshipped the Son. The phrase is a doorway into the Bible’s whole account of who God is.
If you want to go further, read Deuteronomy 6 slowly, then Mark 12, then 1 Corinthians 8. Pray the Shema’s words back to God as your own confession. And bring your questions to a local church where the Scriptures are opened and the one Lord is worshipped.
Questions readers ask
Is Adonai Echad the same as the Shema?
Yes. The Shema is the confession that begins with Hear, O Israel in Deuteronomy 6:4, and Adonai Echad (the Lord is one) is the heart of that line. The name Shema comes from the first Hebrew word, meaning hear.
Does echad mean a compound unity, like the Trinity?
Echad is the ordinary Hebrew word for one and can describe either a single item or a unity of parts, as in one flesh in Genesis 2:24. It does not by itself teach the Trinity, but it does not rule it out. The Shema’s main point is that the LORD alone is God.
Why do some Bibles say Jehovah and others LORD in Deuteronomy 6:4?
Both represent the same four-letter Hebrew name, YHWH. Jewish readers said Adonai in its place, and English translations either print the LORD in small capitals or use Jehovah. The American Standard Version uses Jehovah throughout the Old Testament.
How should I use Adonai Echad in prayer?
You can pray the Shema’s words as a confession that the Lord is the one true God, then follow it with the command to love Him with all your heart, soul, and strength. It is not a formula for results but a statement of trust in the God of Scripture.
Lexicon answers from the Bible and public-domain reference works. It is a study aid and is not affiliated with any organisation.