YHVH Nissi — The LORD My Banner
יְהוָה נִסִּי
'YHVH is my banner' — Moses' altar after the victory over Amalek, won while his hands were held up.
A banner is what an army rallies to and fights under. Jewish memory keeps Amalek's war as the archetype of evil resisted; Messianic reading follows the word nes to Isaiah's Root of Jesse lifted for the nations.
First occurrence
Exod 17:15 — After Rephidim: Aaron and Hur holding Moses' hands
Key passages
Isa 11:10 — 'The Root of Jesse shall stand as a banner (nes) for the peoples'
John 3:14 — 'As Moses lifted up the serpent…' — the lifted nes
In the Greek Scriptures
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