Complex sentence: The logical argument from evil asserts that such a God would not permit evil and suffering in the world because he would know about all of it, be capable of ending it, and have the motivation to do so.
Split into simpler sentences: The logical argument from evil asserts that such a God would not permit evil to exit in the world. Such a God, the argument asserts, would not permit evil in the world because God would know about all evil and suffering, be capable of ending it, and have the motivation to do so.