11 “And I said.” Now leaping over himself he has said what? “Now I have begun:”, when I had gone out even from myself. Here henceforth there is no danger: for even to remain in myself, was danger. “And I said, Now I have begun: this is the changing of the right hand of the Lofty One.” Now the Lofty One has begun to change me: now I have begun something wherein I am secure: now I have entered a certain palace of joys, wherein no enemy is to be feared: now I have begun to be in that region, where all mine enemies do not anticipate watches. “Now I have begun: this is the changing of the right hand of the Lofty One.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)