The Father bears witness of Jesus
37 And the Father himself, which hath sent me, hath borne witness of me. Ye have neither heard his voice at any time, nor seen his shape.
18 I am one that bear witness of myself, and the Father that sent me beareth witness of me.
1 John 5:9
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.