Genesis 17:11
You are to circumcise the flesh of your foreskin, and this will be a sign of the covenant between Me and you.

Exodus 12:13
The blood on the houses where you are staying will distinguish them; when I see the blood, I will pass over you. No plague will fall on you to destroy you when I strike the land of Egypt.

Exodus 13:16
So it shall serve as a sign on your hand and a symbol on your forehead, for with a mighty hand the LORD brought us out of Egypt."

Joshua 2:12
Now therefore, please swear to me by the LORD that you will indeed show kindness to my family because I showed kindness to you. Give me a sure sign

Matthew 26:26-28
While they were eating, Jesus took bread, spoke a blessing and broke it, and gave it to the disciples, saying, "Take and eat; this is My body." . . .

1 Corinthians 11:23-25
For I received from the Lord what I also passed on to you: that the Lord Jesus, on the night He was betrayed, took bread, . . .