Exodus 17:7-9

Expanded Bible

⁷ He named that place Massah [^CHebrew for “test”], because the Israelites tested the Lord when they asked, “Is the Lord with us or not?” He also named it Meribah [^CHebrew for “quarrel”], because they ·quarreled [accused; made a case].

The Amalekites Fight Israel

⁸ At Rephidim the Amalekites came and fought the Israelites. ⁹ So Moses said to Joshua, “·Choose [Select] some men and go and fight the Amalekites. Tomorrow I will stand on the top of the hill, ·holding [extending; stretching out] the ·walking stick [staff] of God in my hands.”