This document is a letter from John to an "elect lady" and her children. John refers to having joy in finding some of the lady's children walking in truth. He encourages them to love one another according to God's commandments. John warns of deceivers who do not confess Jesus Christ coming in the flesh. He advises watching themselves to not lose their reward, and to not receive or greet anyone who does not bring the teaching of Christ. The children of the elect lady's sister send their greetings.