Daniel 3:25

I see; the fire gave light to see them, though it had no power of heat to burn them. Like the Son of God; a Divine, most beautiful, and glorious countenance; either of a mere angel, or rather of Jesus Christ, the Angel of the covenant, who did sometimes appear in the Old Testament before his incarnation, Genesis 12:7, Genesis 18:10,13,17,20 Exo 23:23 33:2 Joshua 5:13 Proverbs 8:31; in all which places it is Jehovah; Genesis 19:24 Exodus 3:2 Acts 7:30,32,33,38.