1 John 5:6-8

Young's Literal Translation

⁶ This one is he who did come through water and blood -- Jesus the Christ, not in the water only, but in the water and the blood; and the Spirit it is that is testifying, because the Spirit is the truth,

⁷ because three are who are testifying [in the heaven, the Father, the Word, and the Holy Spirit, and these -- the three -- are one;

⁸ and three are who are testifying in the earth], the Spirit, and the water, and the blood, and the three are into the one.