Well to start out with God knew Adam and Eve would sin. God looks kind of mean to have the power to stop Adam and Eve from eating of the tree and didn’t. I’ll try to clear this up a bit. God gave Adam and Eve a choice of obeying Him or disobeying Him and eating of the tree of the knowledge of good and evil. Satan in the form of a serpent enticed Eve to eat it because it was tasty and gave her the knowledge of good and evil. She ate it and gave it to her husband and he ate of it too (Genesis 3:6). Later Jesus had to die on a cross to make it possible to be clean of sin, not just covered. If God had stopped Adam and Eve from eating that fruit he never would have died on the cross. And how else would God have shown his mighty love, grace, kindness, and generosity. God let Adam and Eve eat the fruit because it was all a part of His perfect plan so He could demonstrate this.