“This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.”
King James Version (KJV)
3:8 Be careful to excel in good works - Though the apostle does not lay these for the foundation, yet he brings them in at their proper place, and then mentions them, not slightly, but as affairs of great importance. He desires that all believers should be careful - Have their thoughts upon them: use their best contrivance, their utmost endeavours, not barely to practise, but to excel, to be eminent and distinguished in them: because, though they are not the ground of our reconciliation with God, yet they are amiable and honourable to the Christian profession. And profitable to men - Means of increasing the everlasting happiness both of ourselves and others.
Tit 3:8 [This is] a faithful saying. What has been said in the last four verses. Affirm constantly. That they are saved by the gospel, and hence must live holy lives. Maintain good works. Active in good deeds.