Exodus 12:13
And the blood shall be for you as a sign on the houses in which ye are; and when I see the blood, I will pass over you; and the plague shall not be among you for destruction, when I smite the land of Egypt.
Hebrews 11:28
By faith he celebrated the passover and the sprinkling of the blood, that the destroyer of the firstborn might not touch them.
Genesis 17:11
And ye shall circumcise the flesh of your foreskin; and that shall be a sign of the covenant between me and you.
Exodus 12:23
And Jehovah will pass through to smite the Egyptians; and when he sees the blood on the lintel, and on the two door-posts, Jehovah will pass over the door, and will not suffer the destroyer to come into your houses to smite you.
Joshua 2:12
And now, I pray you, swear to me by Jehovah, since I have dealt kindly with you, that ye will also deal kindly with my father's house, and give me a certain sign,
1 Thessalonians 1:10
and to await his Son from the heavens, whom he raised from among the dead, Jesus, our deliverer from the coming wrath.
1 John 1:7
But if we walk in the light as he is in the light, we have fellowship with one another, and the blood of Jesus Christ his Son cleanses us from all sin.