2 “Great is the Lord, and very much to be praised”. How much was he about to say? What terms was he about to seek? How vast a conception has he included in the one word, “very much”? Imagine what you will, for how can that be imagined, which cannot be contained? “He is very much to be praised. And of His Greatness there is no end;” therefore said he “very much:” lest perchance thou begin to wish to praise, and think that you can reach the end of His praises, whose Greatness can have no end. Think not then that He, whose Greatness has no end, can ever be enough praised by you. Is it not then better that as He has no end, so neither should your praise have end? His Greatness is without end; let your praise also be without end....
Source: The Enarrations, or Expositions, on the Psalms (New Advent)