Revelation 7:3

7:3 “Do not damage the earth or the sea or the trees until we have put a seal on the foreheads of the servants of our God.”

Exodus 13:9

13:9 It will be a sign for you on your hand and a memorial on your forehead, so that the law of the Lord may be in your mouth, for with a mighty hand the Lord brought you out of Egypt.

Deuteronomy 6:8

6:8 You should tie them as a reminder on your forearm and fasten them as symbols on your forehead.

Deuteronomy 11:18

11:18 Fix these words of mine into your mind and being, and tie them as a reminder on your hands and let them be symbols on your forehead.

Ezekiel 9:4

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.”

Ezekiel 9:2

9:2 Next, I noticed six men coming from the direction of the upper gate which faces north, each with his war club in his hand. Among them was a man dressed in linen with a writing kit at his side. They came and stood beside the bronze altar.

Ezekiel 3:8

3:8 “I have made your face adamant to match their faces, and your forehead hard to match their foreheads.