'Foreheads' in the Bible

“Don’t harm the earth or the sea or the trees until we seal the slaves of our God on their foreheads.”

They were told not to harm the grass of the earth, or any green plant, or any tree, but only people who do not have God’s seal on their foreheads.

Then I looked, and there on Mount Zion stood the Lamb, and with Him were 144,000 who had His name and His Father’s name written on their foreheads.

Then I saw thrones, and people seated on them who were given authority to judge. I also saw the people who had been beheaded because of their testimony about Jesus and because of God’s word, who had not worshiped the beast or his image, and who had not accepted the mark on their foreheads or their hands. They came to life and reigned with the Messiah for 1,000 years.

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