“He answered and said, Lo, I see four men loose, walking in the midst of the fire, and they have no hurt; and the form of the fourth is like the Son of God.”
King James Version (KJV)
3:25 No hurt - See how the God of nature can when he pleases control the powers of nature! The Son of God - Probably he had heard David speak of him. Jesus Christ, the Angel of the covenant, did sometimes appear before his incarnation. Those who suffer for Christ, have his gracious presence with them in their sufferings, even in the fiery furnace, even in the valley of the shadow of death, and therefore need fear no evil.