'Person' in the Bible

How much more, when evil men have put an upright person to death, in his house, sleeping on his bed, will I take payment from you for his blood, and have you cut off from the earth?

Then David came back to give a blessing to his family. And Michal, Saul's daughter, came out to him and said, How full of glory was the king of Israel today, who let himself be seen uncovered by his servant-girls like a foolish person uncovering himself without shame!

Now by chance there was present a good-for-nothing person named Sheba, the son of Bichri, a Benjamite: and he, sounding the horn, said, We have no part in David, or any interest in the son of Jesse: let every man go to his tent, O Israel.