Exodus 10:7-9

7Then Pharaoh’s servants said to him, “How long shall this man be a snare to us? Let the men go, that they may serve the Lord their God. Do you not yet know that Egypt is destroyed?”

8So Moses and Aaron were brought again to Pharaoh, and he said to them, “Go, serve the Lord your God. Who are the ones that are going?”

9And Moses said, “We will go with our young and our old; with our sons and our daughters, with our flocks and our herds we will go, for we must hold a feast to the Lord.”