In the Gnostic gospels, Jesus exposed the OT God as a false, slanderous version of the Father....a lesser demiurge who was under the delusion that he was the Most High. It isn't hard to see his point.
That's why he said,
"They will do these things because they have not come to know either the Father or me." -John 16:3.
"Righteous Father, the world has, indeed, not come to know you; But I have come to know you, and these have come to know that you sent me forth." -John 17:25