What does 'Now I know that YHWH is greater than all gods' mean?

Jethro's confession is one of the most underrated sentences in the Torah, and the key to understanding it is knowing what triggers it and what kind of knowledge it claims.

Moses had just finished recounting everything — the plagues on Egypt, the deliverance at the sea, the hardships of the wilderness journey. He told Jethro "all that YHWH had done to Pharaoh and to Egypt for Israel's sake" (Exo 18:8). Jethro first rejoices, then blesses YHWH, and then the confession comes:

"Now I know that YHWH is greater than all gods, for in the very matter in which they acted presumptuously, he was against them." — Exodus 18:11

The Hebrew word translated "know" is יָדַע (yada, the verb that appears nearly nine hundred times in the Old Testament in all its forms). Here it is in the perfect tense — yadati, "I have come to know." That is not the same as "I am being informed." The perfect tense carries the force of completed action with a present result: Jethro is saying that on the basis of what he has heard, he has arrived at a settled conclusion. He did not reason his way to YHWH; he responded to testimony. That distinction matters, because the Bible is consistent about it — people come to know YHWH by encountering what YHWH actually does.

The confession is both comparative and superlative at once. "Greater than all gods" — the word gadol (H1419, "great") is placed against the whole divine council, every competing claim of divine power, and YHWH is declared supreme over all of them. This is not modesty. It is the strongest claim that monotheistic language permits.

The ground of the verdict is pointed. Egypt had acted presumptuously — the Hebrew verb is זוּד (zud, a rare word appearing only ten times in the canon, meaning "to act presumptuously, to deal arrogantly"). And YHWH's response met them in the very thing they boasted in: Egypt used the Nile to drown Israel's sons (Exo 1:22), and the sea became the place where Egypt's army drowned (Exo 14). Poetic justice is the theological logic. Jethro sees it and names it.

This is the first time a Gentile makes this kind of confession in direct response to the Exodus. Pharaoh's officials were told what YHWH was doing; Melchizedek blessed Abram but never spoke a "now I know." Jethro is the first outsider to step forward, hear the testimony, and declare — in the first person, in the perfect tense — that YHWH is supreme.

What makes this even more striking is where those exact words end up. Jethro's confession — the cluster of yadati ("I know") + gadol ("great") + YHWH + mi-kol ha-elohim ("above all gods") — recurs nearly word for word in only one other verse in all of Scripture: Psalm 135:5, "For I know that YHWH is great, and our Lord is above all gods." Where Jethro says "Now I know" (the crisis-moment of recognition), the psalm says "For I know" (a settled, perpetual affirmation). The Gentile's in-the-moment confession was absorbed into Israel's congregational worship and made permanent. Three Dead Sea Scrolls manuscripts confirm the psalm's text.

The same pattern runs forward through the canon: Rahab says "I know that YHWH has given you the land" (Jos 2:9); Naaman confesses "I know there is no God in all the earth except in Israel" (2 Ki 5:15). Each one is triggered by hearing of YHWH's power; each one uses the yadati form; each one follows the confession with an act of worship.

The full study on Jethro, the Priest of Midian traces all of these connections in detail — including how the Dead Sea Scrolls confirm the text, what the Septuagint does with the rare verb "acted presumptuously," and how Psalm 135 absorbed a Gentile's confession into Israel's liturgy.