Hebrews 1:3

Verse 3. Who being the brightness of his glory. This verse is designed to state the dignity and exalted rank of the Son of God, and is exceedingly important with reference to a correct view of the Redeemer. Every word which is employed is of great importance, and should be clearly understood in order to a correct apprehension of the passage. First, In what manner does it refer to the Redeemer? To his Divine nature? To the mode of his existence before he was incarnate? Or to him as he appeared on earth? Most of the ancient commentators supposed that it referred to his Divine dignity before he became incarnate; and proceed to argue, on that supposition, on the mode of the Divine existence.