If God knows all things, the beginning and the end, then, how can He regret the choices people make? [Isaiah 46:10, Genesis 3:9, Genesis 4:9, Genesis 18:16-33, Genesis 22:12].
Why did God have Abraham go through with the test of whether he'd sacrifice his son or not since He already knew what he'd do? [Genesis 22:1-19, Genesis 3:8-9, Genesis 4:9, Genesis 18:20-21]