Exodus 12:13
The blood will be a sign for you on the houses where you are. I'll see the blood and pass over you. There will be no plague to destroy you when I strike the land of Egypt.
Hebrews 11:28
By faith he established the Passover and the sprinkling of blood to keep the destroyer of the firstborn from touching the people.
Genesis 17:11
You are all to be circumcised in the flesh of your foreskin, and this is to be the sign of the covenant between me and you.
Exodus 12:23
because the LORD will pass through to strike down the Egyptians, and when he sees the blood on the lintel and the two doorposts, the LORD will pass over the doorway, and won't allow the destroyer to enter your houses to strike you down.
Joshua 2:12
Now therefore, since I've treated you so kindly, please swear in the name of the LORD that you'll also be kind to my father's household by giving me this sure sign:
1 Thessalonians 1:10
and to wait for his Son whom he raised from the dead to come back from heaven. This Jesus is the one who rescues us from the coming wrath.
1 John 1:7
But if we keep living in the light as he himself is in the light, we have fellowship with one another, and the blood of Jesus his Son cleanses us from all sin.