There are many solid arguments and standpoints on why people may not believe in God or see her as merciless, but one thing that gets misconstrued a lot of the time is why he had created the final flood. When free will had still been in the morality works, many people had been committing horrific crimes such as theft, brutality, rape, and other hurtful actions. God had flooded the earth numerous times because of how much people were sinning and hoped that after each wave they’d change, but they didn’t, and so that is why he found Noah and casted the final flood as a hope that this last resort would be the change from a godly man. God hadnt just done that out of pure maliciousness but because she could not stand seeing his creations harming themselves and each other. If I’m wrong I’m happy to be corrected but this is just one major point that gets brung up that is often misinterpreted