Not 100% sure what you mean?
God can do everything that is not "impossible" such as making a round square. The bible's concept of good and evil is a bit of a mixed bag to be honest, depending on which parts you read, which is also why I think people struggle with it.
For instance according to Jesus, God is the only one that is good, and according to God he is the creator of everything that is good and evil, but he also despise evil. Also one of the commandments from God is that you can't kill, yet God kills a huge amount of people, but is obviously not considered evil. Because as stated in Psalms:
Psalms 145:9
9 - The LORD is good to all, and his mercy is over all that he has made.
So God give people what they deserve, because it is good for them... not really sure how that is suppose to work. Given that humans should have learned the difference between good and evil during the fall, yet our understanding seems completely off track in regards to what God does. So again its pretty confusing with a lot of different information being thrown around.
Personally, I think it makes most sense to look at the bible's concept of good and evil from the perspective of God. He decide what is good and evil and humans are basically wrong and don't understand it. At least that way you get down to one contradiction from what I can see, which is Genesis and that humans should have learned the difference between them. Which basically mean that everything God does is good and has a purpose, but obviously not interested in letting us know what it is, and also if one goes with that, one shouldn't complain about anything bad happening to them or the world, because its all part of God's plan.
But as an atheist, there is to many contradictions and the lack of explanation from God should he be real, is not something I find worth worshipping regardless, to be honest I think he is a bit of a monster.
In my experience from talking with people that do believe in him, is that he is good when needed and not to blame for anything bad, and that explanation doesn't really work with me.