The Response to Divine Grace
I. Because of the incredible value of divine grace (vv. 5-7)
A. Why God’s divine grace is so valuable (v. 5a)
B. How we accomplish the purpose of divine grace (vv. 5b-7)
A sideways glance is cast here at the false teachers, for their lives are marked by dissolution and licentiousness. They are characterized by sensuality (2:2), inflamed by sinful desires (2:10); they live for soft and comforting pleasures (2:13), never cease thinking of adultery (2:14), and are enslaved to corruption (2:19). Those who live a godly life exercise self-discipline and are able to restrain themselves so that they do not capitulate to sinful desires.
The focus is on the love between fellow believers, on the family-like devotion that should characterize the Christian community. Here Peter used a word that is distinctive of the Christian community in the sense that all believers are brothers and sisters.