Exodus 12:23

12:23 For the Lord will pass through to strike Egypt, and when he sees the blood on the top of the doorframe and the two side posts, then the Lord will pass over the door, and he will not permit the destroyer to enter your houses to strike you.

Genesis 17:11

17:11 You must circumcise the flesh of your foreskins. This will be a reminder of the covenant between me and you.

Joshua 2:12

2:12 So now, promise me this with an oath sworn in the Lord’s name. Because I have shown allegiance to you, show allegiance to my family. Give me a solemn pledge

Hebrews 11:28

11:28 By faith he kept the Passover and the sprinkling of the blood, so that the one who destroyed the firstborn would not touch them.