Romans 6:19

“I speak after the manner of men, etc..] This refers either to what the apostle had said already concerning service and liberty, things which were known among men, and easy to be understood; or to the following exhortation: what he was about to say, he delivered in a manner suited to their understandings, and was anyrwpinon, “that which was human”; not angelic, or what required the power, purity, and perfection of angels; or what was unreasonable or impossible, but what was their reasonable service, as men; and might be done through the grace of God, in the strength of Christ, and by the assistance of the Spirit: and though he might have insisted upon it with good reason, that they ought to…”

“I speak after the manner of men--descending, for illustration, to the level of common affairs. because of the infirmity of your flesh--the weakness of your spiritual apprehension. for as ye have yielded--"as ye yielded," the thing being viewed as now past. your members servants to Uncleanness and to Iniquity unto--the practice of iniquity; even so now yield your members servants to Righteousness unto holiness--rather, "unto (the attainment of) sanctification," as the same word is rendered in Th2 2:13; Co1 1:30; Pe1 1:2 : --that is, "Looking back upon the heartiness with which ye served Sin, and the lengths ye went to be stimulated now to like zeal and like exuberance in the service of a…”

“I speak after the manner of men - I speak as people usually speak; or I draw an illustration from common life, in order to make myself better understood. Because of the infirmity of your flesh - The word “infirmity” means weakness, feebleness; and is opposed to vigor and strength. The word “flesh” is used often to denote the corrupt passions of people; but it may refer here to their intellect, or understanding; “Because of your imperfection of spiritual knowledge; or incapacity to discern arguments and illustrations that would be more strictly spiritual in their character.” This dimness or feebleness had been caused by long indulgence in sinful passions, and by the blinding influence which…”

“I speak after the manner of men - Thus it is necessary that the scripture should let itself down to the language of men. Because of the weakness of your flesh - Slowness of understanding flows from the weakness of the flesh, that is, of human nature. As ye have presented your members servants to uncleanness and iniquity unto iniquity, so now present your members servants of righteousness unto holiness - Iniquity (whereof uncleanness is an eminent part) is here opposed to righteousness; and unto iniquity is the opposite of unto holiness. Righteousness here is a conformity to the divine will; holiness, to the whole divine nature. Observe, they who are servants of righteousness go on to…”

“6:19 Paul uses the Greek word sarx (human nature, or flesh) to refer to the frailty and proneness to sin that characterizes humans. Paul uses the illustration of slavery to show the relationship of the human nature to sin.”

“I speak: Rom 3:5; Co1 9:8, Co1 15:32; Gal 3:15 because: Rom 8:26, Rom 15:1; Heb 4:15 for as ye: Rom 6:13, Rom 6:17; Co1 6:11; Eph 2:2, Eph 2:3; Col 3:5-7; Pe1 4:2-4 unto iniquity: Rom 6:16; Co1 5:6, Co1 15:33; Ti2 2:16, Ti2 2:17; Heb 12:15 now yield: Rom 6:13 unto holiness: Rom 6:22 Romans 6:20”