Why Does God Allow Evil?

i think that we need to take this question as christians. We need to take it very, very seriously. When i became a father, i was warned by my brother in law to always sort of double check my car to make sure that my kids weren't still in their seats. There's actually a lot of real life accounts of parents and grandparents accidentally leaving innocent children in hot cars. And the reason why im telling the story is because this is just like one example of the kind of the evil, in the depth that exists in our world. It doesn't matter who you're talking about, there are going to be elements that i think is going to reveal thi sort of sinful