Philippians 3:21

Greek, "Who shall transfigure the body of our humiliation (namely, in which our humiliation has place, Co2 4:10; Eph 2:19; Ti2 2:12), that it may be conformed unto the body of His glory (namely, in which His glory is manifested), according to the effectual working whereby," &c. Not only shall He come as our "Saviour," but also as our Glorifier. even--not only to make the body like His own, but "to subdue all things," even death itself, as well as Satan and sin. He gave a sample of the coming transfiguration on the mount (Mat 17:1, &c.). Not a change of identity, but of fashion or form (Psa 17:15; Co1 15:51). Our spiritual resurrection now is the pledge of our bodily resurrection to glory hereafter (Phi 3:20; Rom 8:11). As Christ's glorified body was essentially identical with His body of humiliation; so our resurrection bodies as believers, since they shall be like His, shall be identical essentially with our present bodies, and yet "spiritual bodies" (Co1 15:42-44). Our "hope" is, that Christ, by His rising from the dead, hath obtained the power, and is become the pattern, of our resurrection (Mic 2:13). Next: Philippians Chapter 4

— Jamieson-Fausset-Brown Commentary (public domain)