μέτωπον

Revelation 7:3 μετώπων foreheads

“Do not harm the land or sea or trees until we have placed a seal on the foreheads of the servants of our God.”

Here: The most visible spot on the body. Ownership marks went here, and it is where the beast's mark is later placed (13:16).

Revelation 9:4 μετώπων foreheads

They were told not to harm the grass of the earth or any plant or tree, but only those who did not have the seal of God on their foreheads.

Here: The forehead is the most visible place on a person. It is where Ezekiel's mark was put (Ezek 9:4), where the Lamb's and the Father's name appears (Rev 14:1; 22:4), and where the beast's mark goes (13:16).

Revelation 13:16 μέτωπον forehead

And the second beast required all people, small and great, rich and poor, free and slave, to receive a mark on their right hand or on their forehead,

Here: The most public place on the body. In Revelation it is exactly where God's servants are sealed and carry the Lamb's and the Father's name (7:3; 9:4; 14:1; 22:4). This mark is a deliberate counterpart to that seal.

Revelation 14:1 μετώπων foreheads

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

Here: The forehead, where a slave's owner-mark, a devotee's sign or the high priest's gold plate would be seen. It answers the beast's mark "on the right hand or on the forehead" (13:16).

Revelation 14:9 μετώπου forehead

And a third angel followed them, calling out in a loud voice, “If anyone worships the beast and its image and receives its mark on his forehead or on his hand,

Here: The most visible part of a person. Slaves were sometimes branded there, and God's servants are sealed there (7:3; 9:4; 14:1; 22:4). A mark there says publicly whose you are.

Revelation 17:5 μέτωπον forehead

And on her forehead a mysterious name was written: BABYLON THE GREAT, THE MOTHER OF PROSTITUTES AND OF THE ABOMINATIONS OF THE EARTH.

Here: In Revelation the forehead is where ownership and allegiance are displayed: God's seal and the Lamb's name on the faithful (7:3; 14:1; 22:4), the beast's mark on his followers (13:16; 14:9). The woman's forehead declares who and what she is.

Revelation 20:4 μέτωπον forehead

Then I saw the thrones, and those seated on them had been given authority to judge. And I saw the souls of those who had been beheaded for their testimony of Jesus and for the word of God, and those who had not worshiped the beast or its image and had not received its mark on their foreheads or hands. And they came to life and reigned with Christ for a thousand years.

Here: The visible place of identity. It echoes the Shema's sign 'between your eyes' (Deut 6:8) and the mark of Ezekiel 9:4.

Revelation 22:4 μετώπων foreheads

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

Here: The forehead is the most visible place on the body, where a mark of belonging is seen by everyone. In Revelation it is where both God's seal and the beast's mark are worn. It also recalls the gold plate inscribed 'Holy to the LORD' on the high priest's forehead.