Since the early days of the church, people have tried to deny the Incarnation and still call themselves Christians. The little letter of 2 John is an answer to them and a reaffirmation of the truth about God in the flesh.
God fulfills his plan against human opposition and even through human suffering.
Faith is the means by which we are saved, obey God, and forgive our brothers and sisters.
Jesus combined a warning of judgment with a demonstration of the liberating power of the kingdom of God.