[AnimalMuppet]

God's ideas of right and wrong flow out of his character. If humans are created in God's image, then humans' (unfallen) character is similar to God's. Then God's views of right and wrong are what fit unfallen, uncorrupted humans.

Then you have the Fall. After that, humans are bent, distorted. The situation now is like having a bent ruler. You place it beside an unbent ruler, and the bent ruler often says "I'm straight; it's the other ruler that's bent". That is, humans use their fallen morality to judge God's morality, rather than using God's morality to judge their own.

God's values aren't objective. For them to be objective, there has to be something besides God to judge them by - something more authoritative than God. But God's values are valid for humans made in his image.