1 John 5:7-9

BRG Bible

⁷ For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.

⁸ And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.

⁹ If we receive the witness of men, the witness of God is greater: for this is the witness of God which he hath testified of his Son.