8. Greek, "faithful is the saying." A formula peculiar to the Pastoral Epistles. Here "the saying" is the statement (Tit 3:4-7) as to the gratuitousness of God's gift of salvation. Answering to the "Amen."
      these things, &c.--Greek, "concerning these things (the truths dwelt on, Tit 3:4-7; not as English Version, what follow), I will that thou affirm (insist) strongly and persistently, in order that they who have believed God (the Greek for 'believed in God' is different, Joh 14:1. 'They who have learnt to credit God' in what He saith) may be careful ('Solicitously sedulous'; diligence is necessary) to maintain (literally, 'to set before themselves so as to sustain') good works." No longer applying their care to "unprofitable" and unpractical speculations (Tit 3:9).
      These things--These results of doctrine ("good works") are "good and profitable unto men," whereas no such practical results flow from "foolish questions." So GROTIUS and WIESINGER. But ALFORD, to avoid the tautology, "these (good works) are good unto men," explains, "these truths" (Tit 3:4-7).

JFB.