God sees us at our best. In the future, as we are glorified. How? He resides outside of time and so sees us glorified in our future.
Paul says we are seated together in heaven. Surely, if that is true, we are also glorified as he says elsewhere.
Of course, none of this is our own doing anymore than our salvation. But, this is our purpose, to glorify God.
Now, how can Paul be so sure as to make these astonishing statements? He is sure of God and his promises. Let us be just as sure of God’s promises by our faith in God as Paul is by his.