I stretch forth my hands unto you: my soul thirsts after you, as a thirsty land. Selah.
Read Chapter 143
Augustine of Hippo
AD 430
7. "I stretched forth," saith he, "my hands to Thee: my soul is as a land without water to Thee" (ver. 6). Rain upon me, saith he, to bring forth from me good fruit. "For the Lord shall give sweetness, that our land may give her fruit." "I have stretched forth my hands to Thee; my soul is as a land without water," not to me, but "to Thee." I can thirst for Thee, I cannot water myself.
Water. We can add nothing to this idea. (Calmet)
Man can do no good without God's grace, which David implores with his hands stretched out, both to mortify himself, and to denote fervour. (Worthington)