Evil is not a thing or an entity, it is the absence of good. It is a corruption of something good; such as when a beautiful car gets marred  by rust. There is natural evil such as tornados, earthquakes, drought, etc. and there is moral evil such as infidelity in a marriage, serial killers, and mass murders.

Is God the uncaused creator of the universe or is the universe uncaused and eternal? Has the universe always existed? Before the 20th century there wasn't any way to prove which theory was correct. .

The conquest of the Canaanites by the Israelites in the Book of Joshua was ordered by God because of the child sacrifice, idol worship, violence, and temple prostitution that was practiced there, not because of ethnic cleansing of a people group. [1] God judged the Caananites because He had given them 400 years to stop their wicked practices (Genesis 15:13) but their depravity only got worse. God used Israel to judge the people not because of Israel's moral superiority, but because of the idolatry of the people. [2] 

The debate between Creationism (Intelligent Design) and Evolution (Big Bang, molecules to man) continues to this day. Where did the matter in the Big Bang singularity come from? [1]