Jamieson, Fausset & Brown

Knowing this, &c.--The apostle now grows more definite and vivid in expressing the sin-destroying efficacy of our union with the crucified Saviour. that our old man--"our old selves"; that is, "all that we were in our old unregenerate condition, before union with Christ" (compare Col 3:9-10; Eph 4:22-24; Gal 2:20; Gal 5:24; Gal 6:14). is--rather, "was." crucified with him--in order. that the body of sin--not a figure for "the mass of sin"; nor the "material body," considered as the seat of sin, which it is not; but (as we judge) for "sin as it dwells in us in our present embodied state, under the law of the fall." might be destroyed--(in Christ's death)--to the end. that henceforth we should not serve sin--"be in bondage to sin."