'Person' in the Bible

"For the person who wants to love life and see good days must keep his tongue from evil and his lips from speaking deceit.

For the Messiah also suffered for sins once for all, an innocent person for the guilty, so that he could bring you to God. He was put to death in a mortal body but was brought to life by the Spirit,

Therefore, since the Messiah suffered in a mortal body, you, too, must arm yourselves with the same determination, because the person who has suffered in a mortal body has stopped sinning,

"If it is hard for the righteous person to be saved, what will happen to the ungodly and sinful person?"