Romans 6:21

“What fruit had ye then in those things? etc..] That is, what profit, pleasure, satisfaction, or comfort, had ye in the commission of sin? Sin yields no real profit to the servants of it. If a man, by sinful practices, could amass together the riches of the Indies, or gain the whole world, yet if his soul is lost thereby, what advantage would it be to him? he would be infinitely the loser by it; nor would all his wealth and riches profit him in the day of God's wrath and righteous judgment: nor is there any true pleasure in sin; persons may imagine within themselves they enjoy a real pleasure whilst they are serving divers lusts; but this is but imaginary, it is not real; and this imaginary…”

“What fruit had ye then in those things whereof ye are now ashamed? for the end of those things is death--What permanent advantage, and what abiding satisfaction, have those things yielded? The apostle answers his own question:--"Abiding satisfaction, did I ask? They have left only a sense of 'shame.' Permanent advantage? 'The end of them is death.'" By saying they were "now ashamed," he makes it plain that he is not referring to that disgust at themselves, and remorse of conscience by which those who are the most helplessly "sold under sin" are often stung to the quick; but that ingenuous feeling of self-reproach, which pierces and weighs down the children of God, as they think of the…”

“What fruit, then ... - What reward, or what advantage. This is an argument drawn from the experience of Christians respecting the indulgence of sinful passions. The question discussed throughout this chapter is, whether the gospel plan of justification by faith leads to indulgence in sin? The argument here is drawn from the past experience which Christians have had in the ways of transgression. They have tried it; they know its effects; they have tasted its bitterness; they have reaped its fruits. It is implied here that having once experienced these effects, and knowing the tendency of sin, they will not indulge in it now; compare Romans 7:5. Whereof ye are now ashamed - Having seen their…”

“Those things - He speaks of them as afar off. Romans 6:23”

“6:21 eternal doom (literally death): Throughout chs 5–8, Paul uses death to describe the eternal consequences of sin (5:12, 14, 15, 17, 21; 6:16, 23; 7:5, 9-10, 13, 24; 8:2, 6, 13). The language goes back to God’s warning to Adam and Eve (Gen 2:17). This death is not primarily physical death; it denotes separation from the fellowship of God that, if not reversed through faith in Christ, will last forever.”

“What: Rom 7:5; Pro 1:31, Pro 5:10-13, Pro 9:17, Pro 9:18; Isa 3:10; Jer 17:10, Jer 44:20-24; Gal 6:7, Gal 6:8 whereof: Ezr 9:6; Job 40:4, Job 42:6; Jer 3:3, Jer 8:12, Jer 31:19; Eze 16:61-63; Eze 36:31, Eze 36:32, Eze 43:11; Dan 9:7, Dan 9:8, Dan 12:2; Luk 15:17-21; Co2 7:11; Jo1 2:28 for the: Rom 6:23, Rom 1:32; Deu 17:6, Deu 21:22; Sa2 12:5-7; Kg1 2:26; Psa 73:17; Pro 14:12; Pro 16:25; Phi 3:19; Heb 6:8, Heb 10:29; Jam 1:15, Jam 5:20; Pe1 4:17; Rev 16:6; Rev 20:14 Romans 6:22”