'Son of God' in the Bible

Whoever commits sin is a child of the devil, for the devil has sinned from the beginning. This is why the Son of God appeared??o undo the devil's work.

If anyone acknowledges that Jesus Christ is the Son of God, God keeps in union with him and he with God.

For who is there that is victorious over the world except the man who believes that Jesus is the Son of God?

Whoever believes in the Son of God possesses that testimony in his heart. Anyone who will not believe God has made him a liar, for he has refused to believe the testimony that God has borne to his Son.

I have written this so that you who believe in the Son of God may know that you have eternal life.

And we know that the Son of God has come, and has given us power to recognize him who is true; and we are in union with him who is true, through his Son, Jesus Christ. He is the true God and eternal life.