'Forehead' in the Bible

Let it serve as a sign for you on your hand and as a reminder on your forehead, so that the Lord’s instruction may be in your mouth; for the Lord brought you out of Egypt with a strong hand.

So let it be a sign on your hand and a symbol on your forehead, for the Lord brought us out of Egypt by the strength of His hand.”

And it shall be upon Aaron's forehead, that Aaron may bear the iniquity of the holy things, which the children of Israel shall hallow in all their holy gifts; and it shall be always upon his forehead, that they may be accepted before the LORD.