Since the whole being or body focuses its powers primarily in the arms and hands, which are the extremities, arms and hands in the Word mean power, with the right hand meaning the greater power. Since this is how the levels unfold and express themselves in power, the angels who are with us and are sensitive to everything in us can tell simply from a single action of our hand what we are like in discernment and intent, in charity and faith, and therefore in the inner life of our minds and the outer life in our bodies, which comes from the inner life.
I have often been astounded by the kind of recognition angels have simply from the physical action of a hand, but it has been shown to me often enough and by personal experience. I have also been told that this is why induction into ministry is done by the laying on of hands and why touching the hand means sharing, among other things. This leads to the conclusion that the whole of charity and faith is in works and that charity and faith without works are like halos around the sun that dissipate and vanish when a cloud passes by. So time after time the Word talks about works and doing and says that our salvation depends on such things. Then too, the one who does something is called wise and the one who does not in called foolish.
We should realize, though, that “works” means deeds of service that are put into action. The whole of charity and faith is in them and depends on them. The correspondence is with acts of service because while the correspondence is spiritual, it happens through the substances and materials that are its subjects.
from Divine Love and Wisdom, Section 220