John continues to warn believers against false prophets, saying that those who do not profess Christ and that he has come in the flesh is not from God. Simply put, John says that those who oppose the teaching of the apostles are of the world and should not be believed. This may sound self-aggrandizing, but John is one of the twelve apostles appointed by Jesus who walked with him, learned from him, broke bread with him, who witnessed his miracles and who saw his resurrected body. John goes on to encourage the church to love one another, for love is from God. The kind of love he’s talking about is that which comes from the Father by the Spirit through the Son.