Let the teaching concerning Christ remain as a rich treasure in your hearts. In all wisdom teach and admonish one another with psalms, hymns, and spiritual songs, and sing with grace in your hearts to God.
I have written to you, fathers, because you know Him who has existed from the very beginning. I have written to you, young men, because you are strong and God's Message still has a place in your hearts, and you have overcome the Evil one.
As for you, dear children, you are God's children, and have successfully resisted them; for greater is He who is in you than he who is in the world.
He who believes in the Son of God has the testimony in his own heart: he who does not believe God has made Him a liar, in that he has refused to accept the testimony which God has given about His Son.