Praise you the LORD. Blessed is the man that fears the LORD, that delights greatly in his commandments.
Read Chapter 112
Augustine of Hippo
AD 430
2. "Blessed is the man that feareth the Lord: he will have great delight in His commandments" (ver. 1). God, who alone judgeth both truthfully and mercifully, will see how far he obeyeth His commandments: since "the life of man on earth is a temptation," as holy Job saith. But "He who judgeth us is the Lord." ...He therefore will see how far each man profiteth in His commandments; yet he who loveth the peace of this building together, shall have great delight in them; nor ought he to despair, since there is "peace on earth for men of good will."
1. I believe, brethren, that ye remarked and committed to memory the title of this Psalm. "The conversion," he saith, "of Haggai and Zechariah." These prophets were not as yet in existence, when these verses were sung. ... But both, the one within a year after the other, began to prophesy that which seemeth to pertain to the restoration of the temple, as was foretold so long before. ..."For the temple of God is holy, which temple ye are." Whoever therefore converteth himself to the work of this building together, and to the hope of a firm and holy edifice, like a living stone from the miserable ruin of this world, understandeth the title of the Psalm, understandeth "the conversion of Haggai and Zechariah." Let him therefore chant the following verses, not so much with the voice of his tongue as of his life. For the completion of the building will be that ineffable peace of wisdom, the "beginning" of which is the "fear of the Lord:" let him therefore, whom this conversion buildeth toget...
Of the returning This is in the Greek and Latin, but not in the Hebrew. It signifies, that this psalm was proper to be sung at the time of the return of the people from their captivity: to inculcate to them, how happy they might be, if they would be constant in the service of God. (Challoner)
Yet all Greek copies have not this title, (Haydock) but only Alleluia, with the Hebrew, Syriac
It might be composed by Aggæus, as it relates to the captivity, (ver. 4.) and to the overthrow of Babylon, (ver. 10.; Calmet) or David might thus describe the happiness of the virtuous, (Berthier) and give the captives to understand, that sin was the source of all temporal as well as spiritual miseries. (Worthington)
Delight. We must love God for his own sake. (St. Chrysostom)
Those who sincerely fear God, will take great delight in keeping his commandments. (Worthington)