Shemot 17:13-15 Orthodox Jewish Bible (OJB)
13 And Yehoshua disabled Amalek and his army with the edge of the cherev.
14 And Hashem said unto Moshe, Write this for a zikaron (memorial, remembering) in a sefer, and rehearse it in the ears of Yehoshua; for I will utterly efface the memory of Amalek from under Shomayim.
15 And Moshe built a Mizbe’ach, and called the shem of it Hashem Nissi (Hashem is my Standard [rallying point]);
Exodus 17:13-15 New International Version (NIV)
13 So Joshua overcame the Amalekite army with the sword.
14 Then the Lord said to Moses, “Write this on a scroll as something to be remembered and make sure that Joshua hears it, because I will completely blot out the name of Amalek from under heaven.”
15 Moses built an altar and called it The Lord is my Banner.