In the biblical account of creation we read how God made everything and then “God looked at everything he had made, and he found it very good” (Genesis 1:31). In the case of humanity, we read that “God created mankind in his image; in the image of God he created them; male and female he created them” (Genesis 1:27). If Adam and Eve were “very good,” and made “in the image of God,” why is it that just two chapters later they disobey God, resulting in their expulsion from Paradise? If God created all things to be very good, why does evil exist at all?
Not only did God make everything good, but he loves everything that he has made, and by his will all things remain in existence. “For you love all things that are and loathe nothing that you have made; for you would not fashion what you hate. How could a thing remain, unless you willed it; or be preserved, had it not been called forth by you? But you spare all things, because they are yours, O Ruler and Lover of souls” (Wisdom 11:24-26)
God is in no way, directly or indirectly, the cause of moral evil. He permits it, however, because he respects the freedom of his creatures and, mysteriously, knows how to derive good from it” (see Catechism of the Catholic Church, 311). Free will alone cannot explain the existence of evil. If free will is the cause of evil, why would God allow that? Wouldn’t it be better to not create the possibility of evil? But without free will it would also be impossible to love. “Man, enticed by the Evil One, abused his freedom at the very beginning of history” (CCC, 1707). But ultimately humanity’s freedom was meant for good. “By free will, he is capable of directing himself toward his true good. He finds his perfection ‘in seeking and loving what is true and good’” (CCC, 1704). Without free will, it would be impossible for us to love God and each other.