Joshua 2:18

2:18 When we invade the land, tie this red rope in the window through which you let us down, and gather together in your house your father, mother, brothers, and all who live in your father’s house.

Exodus 12:13

12:13 The blood will be a sign for you on the houses where you are, so that when I see the blood I will pass over you, and this plague will not fall on you to destroy you when I attack the land of Egypt.

Ezekiel 9:4-6

9:4 The Lord said to him, “Go through the city of Jerusalem and put a mark on the foreheads of the people who moan and groan over all the abominations practiced in it.”

9:5 While I listened, he said to the others, “Go through the city after him and strike people down; do no let your eye pity nor spare anyone! 9:6 Old men, young men, young women, little children, and women – wipe them out! But do not touch anyone who has the mark. Begin at my sanctuary!” So they began with the elders who were at the front of the temple.

Mark 14:44

14:44 (Now the betrayer had given them a sign, saying, “The one I kiss is the man. Arrest him and lead him away under guard.”)