Explain the philosophical problem of evil

In an essay question, you will most likely be asked to provide a very brief description of this problem, before going on to explain solutions that have been offered to the problem by various philosophers. In this case, try to limit yourself to describing the problem in the introduction to the essay, and keep it as brief as possible. I will provide a three-point structure for describing the problem, which you may find useful.
The best trick for remembering the problem of evil is to picture a triangle that represents God. Each side is an aspect of God's nature, without which he would not be God anymore. One side is his omnipotence (meaning all-powerful), one side his omniscience (meaning all-knowing), and one side his omni-benevolence (meaning he is all-loving). The problem of evil, then, is that if God is truly all three of these, then why does he continue to let people suffer? It was a problem first identified by the Greek philosopher Epicurus, who used it as evidence against God's existence. His argument was this:If an all-powerful, all-knowing, and all-loving God exists, then evil does not.Evil clearly exists.Therefore, an all-powerful, all-knowing, and all-loving God does not exist.This is particularly a problem for religions such as Christianity, Judaism, and Islam, which all teach the existence of an all-powerful, all-loving, all-knowing God.