Exodus 12:7

12:7 They will take some of the blood and put it on the two side posts and top of the doorframe of the houses where they will eat it.

Exodus 30:12

30:12 “When you take a census of the Israelites according to their number, then each man is to pay a ransom for his life to the Lord when you number them, so that there will be no plague among them when you number them.