In the present essay, the Alter Rebbe will explain the statement of Pri Etz Chaim that nowadays, this “extraction” is mainly effected through prayer. For prayer is uniquely able to draw down an infinite degree of G-dliness; prayer alone can bring about changes within the world, healing the sick and causing rain to fall. In order for such a degree of G-dliness to be called down, there must first be an arousal initiated from below, an expression of man’s ardent desire to be the recipient of Divine benefactions. And if these benefactions are to flow from an infinitely high source, the plea that requests them must surge from a correspondingly deep source—“with all one’s might,” from the infinite depths of one’s soul.