And the LORD said unto him,
Go through the midst of the city,
through the midst of Jerusalem,
and set a mark upon the foreheads of the men
that sigh and that cry for all the abominations that be done in the midst thereof.
Ezekiel 9:4
Saying,
Hurt not the earth, neither the sea, nor the trees,
till we have sealed the servants of our God in their foreheads.
Revelation 7:3