Verses for how should

How should one chase a thousand, and two put ten thousand to flight, except their Rock had sold them, and the LORD had shut them up?

Therefore, O thou son of man, speak unto the house of Israel; Thus ye speak, saying, If our transgressions and our sins be upon us, and we pine away in them, how should we then live?

For mine own sake, even for mine own sake, will I do it: for how should my name be polluted? and I will not give my glory unto another.

I know it is so of a truth: but how should man be just with God?