Jesus’ works bear witness of Himself
John 5:36
36 But I have greater witness than that of John: for the works which the Father hath given me to finish, the same works that I do, bear witness of me, that the Father hath sent me.
John 10:25
25 Jesus answered them, I told you, and ye believed not: the works that I do in my Father’s name, they bear witness of me.