When will believers admit that the God they have created in their image is as capable of evil as they are? The Gods of Greece and Rome had their moments of pettiness, vengefulness and viciousness (Athene, generally judged the best of the bunch, turned poor Arachne into a spider out of jealousy). The Egyptians had Set and Apophis, the Norse had Loki. The God of the Old Testament smote innocent Egyptians with plagues, murdered babies, drowned whole armies and burned cities to the ground on a whim. The God of the New Testament intends to inflict eternal, horrifying torment on those whose only sin is to observe different rituals from his 'chosen'.

How could an omniscient God not have known in advance about Lucifers' rebellion and the Fall of Man? How could an omnipotent God not have prevented both unless he didn't want to?

There is no 'problem of evil' in theism. The source of everything must also be, ipso facto, the source of evil. Unless we fall back on common sense and define evil as "What the other lot do."