Here the apostle encourages against sins of infirmity (ver. 1, 2), shows the true knowledge and love of God (ver. 3-6), renews the precept of fraternal love (ver. 7-11), addresses the several ages of Christians (ver. 12-14), warns against worldly love (ver. 15-17), against seducers (ver. 18, 19), shows the security of true Christians (ver. 20-27), and advises to abide in Christ, ver. 28, 29.
Christ the Propitiation. (a. d. 80.)