John 10:37

If I had not done among them the works which none other man did, they had not had sin: but now have they both seen and hated both me and my Father.

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.

Jesus answered them, Many good works have I shewed you from my Father; for which of those works do ye stone me?

Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.

If I bear witness of myself, my witness is not true.