📖 Biblical Definition
YHWH-Nissi (יְהוָה נִסִּי) — "the LORD is my banner" — is the covenant name Moses gave the altar he built after Israel’s victory over Amalek at Rephidim (Exodus 17:14-16). A nes ("banner, standard, ensign") was a military rallying-point — a tall flag visible across the battlefield around which the troops gathered. Moses’ declaration is twofold: YHWH Himself is the rallying point of His people’s warfare, and YHWH is the cause of every victory His armies win. The banner declares whose army this is. Isaiah extends the imagery to the Messiah: "there shall be a root of Jesse, which shall stand for an ensign [nes] of the people; to it shall the Gentiles seek" (Isaiah 11:10). Christ is the banner; gather around Him.
📜 Webster 1828 Definition
The LORD My Banner — named after Amalek's defeat.
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The compound covenant name Moses pronounced at the altar after the defeat of Amalek at Rephidim, when Joshua's army prevailed only as long as Moses' arms remained lifted with the rod of God. YHWH Himself is the army's banner — the rallying standard, the cause of victory, the One under whom the troops gather and fight.
📖 Key Scripture
Exodus 17:15 — "And Moses built an altar, and called the name of it Jehovahnissi."
Exodus 17:16 — "For he said, Because the LORD hath sworn that the LORD will have war with Amalek from generation to generation."
Isaiah 11:10 — "And in that day there shall be a root of Jesse, which shall stand for an ensign of the people; to it shall the Gentiles seek."
⚠️ Modern Corruption
Reduced to vague "God is on our side" patriotism; the specific war-against-Amalek typology gets dropped.
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Modern usage tends to flatten YHWH-Nissi into general divine support — God is for me, God is on our team. Exodus 17 is sharper: there is a perpetual war against Amalek (the flesh, the world, the devil), and the LORD Himself is the standard the saint rallies under.
Recover the typology: Amalek-the-flesh is still attacking; the rod of God still must be lifted; the LORD Himself is still the banner under which we fight. The war is generational.
🔗 Greek & Hebrew Roots
Hebrew Yahweh + nes (banner, standard).
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['Hebrew', 'H3068', 'Yahweh', 'the covenant name']
['Hebrew', 'H5251', 'nes', 'banner, standard, ensign']
Usage
"The LORD is my banner; under Him I fight."
"Amalek-the-flesh is generational warfare."
"Rally to His name; the battle is His."