'One's' in the Bible

In fact, sin was in the world before the law, but sin is not charged to a person’s account when there is no law.

So then God’s choice is not dependent on human will, nor on human effort [the totality of human striving], but on God who shows mercy [to whomever He chooses—it is His sovereign gift].

Pay back to no man evil for evil. Take thought for what is right and seemly in every one's esteem.

Owe nothing to anyone except to love and seek the best for one another; for he who [unselfishly] loves his neighbor has fulfilled the [essence of the] law [relating to one’s fellowman].

Love does no wrong to a neighbor [it never hurts anyone]. Therefore [unselfish] love is the fulfillment of the Law.