John 8:15 WEB

¹³  The Pharisees therefore said to him, 'You testify about yourself. Your testimony is not valid.'

¹⁴  Jesus answered them, 'Even if I testify about myself, my testimony is true, for I know where I came from, and where I am going; but you don't know where I came from, or where I am going.

¹⁵  You judge according to the flesh. I judge no one.

¹⁶  Even if I do judge, my judgment is true, for I am not alone, but I am with the Father who sent me.

¹⁷  It's also written in your law that the testimony of two people is valid.