'Concerning' in the Bible

Now when Cephas (Peter) came to Antioch, I opposed him face to face [about his conduct there], because he stood condemned [by his own actions].

This is what I mean: the Law, which came into existence four hundred and thirty years later [after the covenant concerning the coming Messiah], does not and cannot invalidate the covenant previously established by God, so as to abolish the promise.

Why, then, the Law [what was its purpose]? It was added [after the promise to Abraham, to reveal to people their guilt] because of transgressions [that is, to make people conscious of the sinfulness of sin], and [the Law] was ordained through angels and delivered to Israel by the hand of a mediator [Moses, the mediator between God and Israel, to be in effect] until the Seed would come to whom the promise had been made.

For the whole Law [concerning human relationships] is fulfilled in one precept, “You shall love your neighbor as yourself [that is, you shall have an unselfish concern for others and do things for their benefit].”