Let the word of Christ dwell in you richly; teach and admonish one another in all wisdom; and with gratitude in your hearts sing psalms, hymns, and spiritual songs to God.
I write to you, children, because you know the Father. I write to you, fathers, because you know him who is from the beginning. I write to you, young people, because you are strong and the word of God abides in you, and you have overcome the evil one.
Those who believe in the Son of God have the testimony in their hearts. Those who do not believe in God have made him a liar by not believing in the testimony that God has given concerning his Son.