He shall dwell on high; literally, inhabit heights—live, as it were, in the perpetual presence of God. His place of defense shall be the munitions of rocks; rather, strongholds of rocks (i.e. rocky strongholds) shall be his refuge.
He shall fly to God, as his "Rock and his Fortress" (Psalms 18:2), not from him, as his "Enemy and Avenger" (Pc. Isaiah 8:2). Bread … waters; i.e. all that is necessary for his support and sustenance.
Shall be given him … shall be sure; rather, is given him … is sure. Godliness has "the promise of the life that now is," as well as that of the life "which is to come" (1 Timothy 4:8).