It is an important fact that in the book of Job, we find that Job  doesn't say that God is right. Rather says that we do not understand God. It is his friends that stick  up for God . They say God does not send punishment to a righteous man,   They say everything that the religious say. And GOD at the end of the book says they are wrong.  It says in Isaiah God creates evil. Rather, God's ways are not subject to human understanding.  בורא רעה. This is changed in the first  blessing of the Shema to "He creates everything." But in the Prophet it says openly "He creates Evil."

This sounds like blasphemy. However God in the Book of Job says it was the friends of Job that were saying blasphemy by saying God does not punish the righteous. 

But the friends of Job had good intensions to stick up for God, instead of sticking up for their friend, Job. Still, God did not want or need their good intensions. Rather He said that they sinned, and that Job should pray for them to be forgiven. To Job himself he simply said that Job does not understand.

It is hard to know why God, who is totally good should create evil. But that refers back to an older problem -How do sperate events stem from God who is a Divine Simplicity, a Undifferentiated Unity. He is not made of Separate ingredients, 

We do not know. These issues are in the realm of the "dinge an sich"-things in themselves-where even te most pure Reason can not enter