You see many men and women hungering and thirsting after sensual satisfactions, or after sensible enjoyments; these are unhappy, miserable men, they often hunger and thirst, and are not satisfied: but I will show you a more excellent way, a more excellent object of your hunger and thirst, that is, righteousness; both a righteousness wherein you may stand before God, which is in me, Jeremiah 23:6, and is revealed from faith to faith, Romans 1:17, and the righteousness of a holy life. Those are blessed men, who first seek the kingdom of heaven, and the righteousness thereof, God will fill these men with what they desire, Isaiah 55:1,2 Lu 1:53. There are some who understand this text of a hungering after the clearing of their innocency towards men, which is natural to just and innocent persons falsely accused and traduced, and they have a promise of being filled, Psalms 37:6; but I see no reason to conclude this the sense of this text.
Related Commentaries of Matthew 5:6
Matthew 5:6
6 Blessed are they which do hunger and thirst after righteousness: for they shall be filled.