Exodus 17:15

Overview - Exodus 17
The people murmur for water at Rephidim.
God sends them for water to the rock in Horeb.
The place is called Massah and Meribah.
Amalek is overcome by Joshua, while Moses holds up his hands with the rod of God.
14 Amalek is doomed to destruction; and Moses builds the altar JEHOVAH-nissi.
Treasury of Scripture Knowledge

Exodus 17:15  (King James Version)
And Moses built an altar, and called the name of it Jehovahnissi:

i.e., the Lord my banner.
Genesis 22:14 ; 33:20 Psalms 60:4