Be sure you continue to follow the teaching you heard from the beginning. If you continue to follow what you heard from the beginning, you will stay in the Son and in the Father.
They have written the same things that we learned from others—the people who saw those things from the beginning and served God by telling people his message.
Let the teaching of Christ live in you richly. Use all wisdom to teach and instruct each other by singing psalms, hymns, and spiritual songs with thankfulness in your hearts to God.
We announce to you what we have seen and heard, because we want you also to have fellowship with us. Our fellowship is with God the Father and with his Son, Jesus Christ.
But if we live in the light, as God is in the light, we can share fellowship with each other. Then the blood of Jesus, God’s Son, cleanses us from every sin.
Anyone who goes beyond Christ’s teaching and does not continue to follow only his teaching does not have God. But whoever continues to follow the teaching of Christ has both the Father and the Son.
So do not forget what you have received and heard. Obey it, and change your hearts and lives. So you must wake up, or I will come like a thief, and you will not know when I will come to you.