Thematic Bible: The lord changing believers

We, however, are free citizens of Heaven, and we are waiting with longing expectation for the coming from Heaven of a Saviour, the Lord Jesus Christ, who, in the exercise of the power which He has even to subject all things to Himself, will transform this body of our humiliation until it resembles His own glorious body.

But this I tell you, brethren: our mortal bodies cannot inherit the Kingdom of God, nor will what is perishable inherit what is imperishable. I tell you a truth hitherto kept secret: we shall not all sleep, but we shall all be changed, in a moment, in the twinkling of an eye, at the sounding of the last trumpet; for the trumpet will sound, and the dead will be raised incapable of decay, and *we* shall be changed. read more.
For so it must be: this perishable nature must clothe itself with what is imperishable, and this mortality must clothe itself with immortality. But when this perishable nature has put on what is imperishable, and this mortality has put on immortality, then will the words of Scripture be fulfilled, "Death has been swallowed up in victory." "Where, O death, is thy victory? Where, O death, is thy sting?" Now sin is the sting of death, and sin derives its power from the Law; but God be thanked who gives us the victory through our Lord Jesus Christ!

Now by "the Lord" is meant the Spirit; and where the Spirit of the Lord is, freedom is enjoyed. And all of us, with unveiled faces, reflecting like bright mirrors the glory of the Lord, are being transformed into the same likeness, from one degree of radiant holiness to another, even as derived from the Lord the Spirit.