Everyone who sins also commits lawlessness. Sin is lawlessness.
Besides, to sin here, does not mean to offend in some instances; nor is the word sin to be taken for every fault or wrong a man may commit.; but he calls that sin, when men with their whole heart run into evil, nor does he understand that men sin, except those who are given up to sin. For the faithful, who are as yet tempted by the lusts of the flesh, are not to be deemed guilty of iniquity, though they are not pure or free from sin, but as sin does not reign in them, John says that they do not sin, as I shall presently explain more fully. 