For who? Would you like me to accept your premise of an intolerant and mistaken All Knowing, All Present God just so the contradiction your question is built on is validated, because obviously you care neither for Logic nor for Truth as you pretend that what I said is false or wrong without even being able to qualify how and why my answer wasn't good enough? The Principle of NonContradiction and basic logic proposes that Two Opposing Statements of Fact cannot be both true at once, so then, how can an All Knowing Being make mistakes, or how can an All Accepting and Loving God SMITE those who err and sin?
RE: How Evil it is that "Holy" Texts Did not Condemn Slavery