For starters, it portrays Abraham as a serial self-cuckold, a liar (who cares nothing about the consequences for others), and as the sort of man who would have relations with his half-sister. It even features an early instance of the canard that persons of Jewishness are more likely to be schizophrenic, by recounting that Abraham hears voices, and is willing to murder his own son on account of them!
Arguably worse, it depicts Jacob the Patriarch (no less) as an opportunist*, a deceiver, and a father dishonorer. It even goes so far as to slur him as one who "wrestles with God," which is clearly a dog whistle for "Satanism."
And did you know that passages like Genesis 27:29 give credence to the conspiracy theory that Jewish people want to rule the world?
Don't even get me started on the prophet Moses, who, among other things, is slandered (by his supposed "genealogy") as being the product of incest!
None of this is very flattering, to say the least.
*or predatory lentiler