'Foreheads' in the Bible

Behold, I have made thy face hard against their faces, and thy forehead hard against their foreheads.

and Jehovah 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 are done in the midst thereof.

saying, Hurt not the earth, nor the sea, nor the trees, until we shall have sealed the bondmen of our God upon their foreheads.

and it was said to them, that they should not injure the grass of the earth, nor any green thing, nor any tree, but the men who have not the seal of God on their foreheads:

And I saw, and behold, the Lamb standing upon mount Zion, and with him a hundred and forty-four thousand, having his name and the name of his Father written upon their foreheads.

and they shall see his face; and his name is on their foreheads.