Here's my thoughts for what they're worth
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Most of us will have a difficult time defining truth outside of God because that is our constant source of Truth and we have been taught and conditioned to go to Him for it. Right to us and to God is righteousness, which is doing that which is right in God's eyes, wrong would be to do that which is wrong in God's eyes, see we can't separate it from God because He sets the standards for what is right and wrong.
On the other hand, we could discuss morality, and even that man's morality is not the same as God's morality even though God has placed inside of us the soul, consciousness, so we instinctively know what is right and wrong, but there is a problem with this, too. We can chose to believe in absolute morality which should be taken to mean that our moral directive (doing "right") remains the same no matter the situation.
I'm a moral absolutist (I think relativism is a justification for sin) yet if asked I wouldn't tell the Nazis about the Jews under my floorboards. In that case it's not lying, is it? The Nazi doesn't have a right to that information (protecting by lying is right, isn't it?). I wouldn't condemn a man, whose children are about to starve to death, if he stole food to feed them; he has a right to live and I'm not sure I'd call it stealing because of that. Stealing is wrong in most cases, yet to save your children it would be the right action to take.
I think the base morality stays the same (doing that which is right) while it may be the case that depending on the situation, we may need to act differently (which might appear to be wrong).