I. The believer's standing 1-2
II. The present danger of false teachers 3,4
III. God's judgment of sin 5-7
IV. The wickedness of false teachers 8-16
A. Their opposition to authority 8-10
B. Their versatility in sin 11-13
C. Their judgment in righteousness 14-16
V. The call for Christians to be alert 17-23
A. By heeding the words of the apostles 11,18
B. By being wary of heretics 19
C. By growing in grace 20,21
D. By caring for others 22,23
VI. Doxology 24,25