13 “And I will look for Your name, for it is pleasant.” Bitter is the world, but Your name is pleasant. Even if certain sweet things are in the world, yet with bitterness they are digested. Your name is preferred, not only for greatness but also for pleasantness. “For unjust men have told to me their delights, but it is not as Your law, O Lord.” For if there were nothing sweet to the Martyrs, they would not have suffered with equanimity so great bitterness of tribulations.
Their bitterness by any one was experienced, their sweetness easily could no one taste. The name of God therefore is pleasant to men loving God above all pleasantnesses. “I will look for Your name, for it is pleasant.” And to what do You prove that it is pleasant? Give me a palate to which it is pleasant. Praise honey as much as you are able, exaggerate the sweetness thereof with what words you shall have the power: a man knowing not what honey is, unless he shall have tasted, what you say knows not.
Therefore the rather to the proof the Psalm inviting you says what? “Taste and see that sweet is the Lord.” Taste you will not, and you say, Is it pleasant? What is pleasant? If you have tasted, in your fruit be it found, not in words alone, as it were only in leaves, lest by the curse of the Lord, to wither like that fig-tree you should deserve. “Taste,” he says, “and see, that sweet is the Lord.” Taste and see: then you shall see, if you shall have tasted. But to a man not tasting, how do you prove?
By praising the pleasantness of the name of God, whatsoever things you shall have said are words: something else is taste. The words of His praise there hear even the ungodly, but none taste how sweet it is, but the Saints. Further, a man discerning the sweetness of the name of God, and wishing to unfold and wishing to show the same, and not finding persons to whom he may unfold it; for to the Saints there is no need that he show it, because they even of themselves taste and know, but the ungodly cannot discern what they will not taste: does, I say, what, because of the sweetness of the name of God?
He has borne him immediately away from the crowds of the ungodly. “And I will look,” he says, “for Your name, for it is pleasant, in the sight of Your Saints.” Pleasant is Your name, but not in the sight of the ungodly. I know how sweet a thing it is, but it is to them that have tasted.
Source: The Enarrations, or Expositions, on the Psalms (New Advent)