Verse 20.— And we know that the Son of God is come. That Christ is come in the flesh we know, not only from the testimony of men, but by the testimony God has fur- nished us, by himself, his Son, and the Holy Spirit. Thus we have the witness of ourselves that we have life in Christ, and that Christ dwells in us. We have this understanding. All this we know to be true, because we are in him who is true, and we know from these immovable sources, that in Christ Jesus the only true God is revealed to the children of men, and that in him, and in him alone, is eternal life, and that through him alone God's children have eternal life bestowed upon them.