The theme of 2 John is walking in the truth (2 John 1:4).
Outline:
I. Introduction and greeting (v. 1-3)
II. Commendation for walking in the truth (v. 4)
III. Commandment to love one another (v. 5-6)
IV. Cautions concerning false teachers (v. 7-11)
V. Conclusion and greeting (v. 12-13)