1 John 5:7-9

Young's Literal Translation

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.

⁹ If the testimony of men we receive, the testimony of God is greater, because this is the testimony of God that He hath testified concerning His Son.