'Hand' in the Bible

And recognizing the grace [that God had] bestowed on me, James and Cephas (Peter) and John, who were reputed to be pillars [of the Jerusalem church], gave to me and Barnabas the right hand of fellowship, so that we could go to the Gentiles [with their blessing] and they to the circumcised (Jews).

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.

See with what large letters I am writing to you with my own hand.