'Upright' in the Bible

Take the best and most upright of your master's sons, and make him king in his father's place, and put up a fight for your master's family.

And in the morning he went out and, stopping, said to all the people there, You are upright men: it is true that I made designs against my master, and put him to death; but who is responsible for the death of all these?

More than this, Manasseh took the lives of upright men, till Jerusalem from one end to the other was full of blood; in addition to his sin in making Judah do evil in the eyes of the Lord.

And because of the death of those who had done no wrong, for he made Jerusalem full of the blood of the upright; and the Lord had no forgiveness for it.