Christians hold that God makes all things completely and uses nothing to do so. So all depends on him. They say evil is just a distortion not a thing so the question of creating it does not come up. God is the real cause of all things and any other causes are really indirectly to do with him. So God is the primary cause of all but not of evil.

The Bible is said to talk as if God did evil directly when it in fact he is the first cause and it is secondary causes that do the evil. The Christians then read the philosophy of primary and secondary causes into non-philosophical texts to get denying that God does evil. They say, "I am the Lord I do evil" means, "I am the Lord and I create a world in which evil happens. I don't do the evil but let it happen." The excuse is the Bible is simplifying which is insane for the book is not intended for those educated enough to make such distinctions. The world of the time had no problem worshipping Gods with a dark side.

The Bible DOES clearly and repeatedly teach that God DOES EVIL DIRECTLY. He gave the commands to have sinners killed and gave the commands directly. A sabbath breaker was stoned to death at God's command. Jesus walked to his death deliberately and thus harmed his killers if you believe the killer harms themselves as much as the victim. That was a direct evil too. God says, "I create evil." "The Lord is a man of war". If war is a needed evil it is still an evil and God calling himself a warrior is clearly revelling in it. Look at Isaiah 37:26 NIV. “Have you not heard? Long ago I ordained it. In days of old I planned it; now I have brought it to pass, that you [Sennacherib, king of Assyria] have turned fortified cities into piles of stone.” ESV translation is: “Have you not heard that I determined it long ago? I planned from days of old what now I bring to pass, that you should make fortified cities crash into heaps of ruins.” Asah is the word that ordained or determined is translated from. It means to make or do. It describes God as the only real agent. Its deliberate.