Exodus 7:16

7:16 Tell him, ‘The Lord, the God of the Hebrews, has sent me to you to say, “Release my people, that they may serve me in the desert!” But until now you have not listened.

Exodus 8:1

8:1 (7:26) Then the Lord said to Moses, “Go to Pharaoh and tell him, ‘Thus says the Lord: “Release my people in order that they may serve me!

Exodus 13:14

13:14 In the future, when your son asks you ‘What is this?’ you are to tell him, ‘With a mighty hand the Lord brought us out from Egypt, from the land of slavery.