28Therefore Jesus cried in the temple (when he was) teaching, and said, Ye know me, and ye know of whence I am; and I came not of myself, but he is true that sent me, whom ye know not.
29I know him, and if I say that I know him not, I shall be like to you, a liar; but I know him, for of him I am (or for I am from him), and he sent me.
John 7
John 7:28-29