“He is the radiance of the glory of God and the exact imprint of His nature, and He upholds the universe by the word of His power…” Hebrews 1:3
When you think of an image or reflection of something, perhaps you envision a reflection in the water. The picture is there but blurred like an Impressionist’s painting. Or maybe you think of a mirror- a clear, sharp reflection. But no matter the perfection of the reflection, neither of those are actually you. They are you of a short, but hollow-completely devoid of substance.
What about a coin? It bears the image of the person or government it belongs to, giving it some sort of substance and it is given some value because of the image-but it is not the value of the image, but the image giving it value.
So when Hebrews says Jesus is the exact imprint of the nature of God what is being communicated? Is it that of a reflection in the water? A mirror? Or an imprint on a coin?
Calvin says this:
“When, therefore, thou hear that the Son is the brightness of the Father’s glory, think this with thyself, that the glory of the Father is invisible until is shines forth in Christ, and that he is called the impress of his substance…Even the Substance of the Father is in a manner engraved on the Son” (Commentary on Hebrews)
John 1:1, Colossians 1:16-17, and the passage above tell us that is was God who created the universe through the person of the Son. I think Genesis also gives us a trinitarian creation but the person of the Son-Jesus “upholds the universe by the word of His power”.
Aside from this passage implicitly claiming the eternality of Christ, it is expressing that the Son is the exact imprint of the substance of God. Without conflating the persons, Christ has all the attributes of deity that the Father does-as does the Spirit; but different from the Spirit, Christ actually is an image for He became flesh.
Just a few years before Jerry Bridges died, I was at a conference he was speaking at, and the only thing I really remember from his message was this:
“Preach the gospel to yourself-everyday.”
The creator of the universe condescending to our level, to die for the sins of those who believe and enable them to believe to adopt them as children of the Father and co-heirs with the Son.