1 John 5:5-8 

⁵ Who is he who overcomes the world, but he who believes that Jesus is the Son of God? ⁶ This is He who came by water and blood—Jesus Christ; not only by water, but by water and blood. And it is the Spirit who bears witness, because the Spirit is truth. ⁷ For there are three that bear witness in heaven: the Father, the Word, and the Holy Spirit; and these three are one. ⁸ And there are three that bear witness on earth: the Spirit, the water, and the blood; and these three agree as one.