Exodus 6:5

6:5 I have also heard the groaning of the Israelites, whom the Egyptians are enslaving, and I have remembered my covenant.

Exodus 12:38

12:38 A mixed multitude also went up with them, and flocks and herds – a very large number of cattle.

Exodus 19:22

19:22 Let the priests also, who approach the Lord, sanctify themselves, lest the Lord break through against them.”