6 But it is a great thing to have the heart established, and not to be moved, while they rejoice who love what they see, and mock at him who hopes for what he sees not; “what the Lord has prepared for them that love Him.” How great is the value of this which is not seen, and it is bought for so much as each man is able to give for it. On this account he also “dispersed abroad, and gave to the poor”: he saw not, yet he kept buying; but He was storing up the treasure in heaven, who deigned to hunger and thirst in the poor on earth. It is no wonder then if “his righteousness remains for ever:” He who created the ages being his guardian. “His horn,” whose humility was scorned by the proud, “shall be exalted with honour.”
Source: The Enarrations, or Expositions, on the Psalms (New Advent)