They that hunger and thirst after righteousness (hoi peinōntes kai dipsōntes tēn dikaiosunēn). Here Jesus turns one of the elemental human instincts to spiritual use. There is in all men hunger for food, for love, for God. It is passionate hunger and thirst for goodness, for holiness. The word for “filled” (chortasthēsontai) means to feed or to fatten cattle from the word for fodder or grass like Mar 6:39 “green grass” (chortos chlōros).