Exodus 17:9

Timna was a concubine of Esau’s son Eliphaz, and she bore Amalek to Eliphaz. These are the sons of Esau’s wife Adah.

“And you shall take in your hand this staff, with which you shall do the signs.”

So Moses took his wife and his sons and mounted them on a donkey and returned to the land of Egypt. Moses also took the staff of God in his hand.

“As for you, raise up your staff and stretch out your hand over the sea and split it, and the sons of Israel shall go through the midst of the sea on dry land.

So Moses arose with Joshua his attendant, and Moses went up to the mountain of God.

“Remember what Amalek did to you along the way when you came out from Egypt,

Then Yahweh said to Joshua, “Stretch out the javelin that is in your hand toward Ai, for I will give it into your hand.” So Joshua stretched out the javelin that was in his hand toward the city.

“Thus says Yahweh of hosts, ‘I will punish Amalek for what he did to Israel, how he set himself against him on the way while he was coming up from Egypt.