Revelation 7:3

“And Yahweh will pass through to smite the Egyptians; and He will see the blood on the lintel and on the two doorposts, and Yahweh will pass over the doorway and will not allow the destroyer to come into your houses to smite you.

Yahweh said to him, “Go through the midst of the city, even through the midst of Jerusalem, and put a mark on the foreheads of the men who sigh and groan over all the abominations which are being done in its midst.”

“He who has received His witness has set his seal to this, that God is true.

And I heard something like a voice in the midst of the four living creatures saying, “One choinix of wheat for one denarius, and three choinix of barley for one denarius, and do not harm the oil and the wine.”

After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth, so that no wind would blow on the earth or on the sea or on any tree.

Then I saw another angel ascending from the rising of the sun, having the seal of the living God; and he cried out with a loud voice to the four angels to whom it was granted to harm the earth and the sea,

saying, “Do not harm the earth or the sea or the trees until we have sealed the slaves of our God on their foreheads.”

And they were told not to hurt the grass of the earth, nor any green thing, nor any tree, but only the men who do not have the seal of God on their foreheads.

And he causes all, the small and the great, and the rich and the poor, and the free men and the slaves, that they be given a mark on their right hand or on their forehead,

and that no one will be able to buy or to sell, except the one who has the mark, either the name of the beast or the number of his name.

Then I looked, and behold, the Lamb was standing on Mount Zion, and with Him 144,000, having His name and the name of His Father written on their foreheads.

and they will see His face, and His name will be on their foreheads.