The Son is the radiance of God’s glory and the exact representation of His nature, upholding all things by His powerful word. After He had provided purification for sins, He sat down at the right hand of the Majesty on high.
3. Who being the brightness of his glory, etc. These things are said of Christ partly as to his divine essence, and partly as a partaker of our flesh. When he is called the brightness of his glory and the impress of his substance, his divinity is referred to; the other things appertain in a measure to his human nature.
Here the apostle begins with a general declaration of the excellency of the gospel dispensation above that of the law, which he demonstrates from the different way and manner of God's communicating himself and his mind and will to men in the one and in the other: both these dispensations were of God, and both of them very good, but there is a great difference...
Commenting on Hebrews 1:1-3
Who being the brightness of his glory,.... Or "of glory"; of God the Father, the God of glory, and who is glory itself; so called on account of his glorious nature and perfections and because of the glorious manifestations of them in his works of creation and providence, and in the various dispensations of his grace, and especially in his Son; and because he is...