Then said Jesus unto them,
When you have lifted up the Son of man, then shall you know that I am he, and that I do nothing of myself; but as my Father has taught me, I speak these things.
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Tertullian of Carthage
AD 220
Himself says: "Then shall ye know that I am He and that I am saying nothing of my own self; but that, as my Father hath taught me, so I speak, because He that sent me is with me."