Alleluia. We must again utter Alleluia, a cry whose charm is always new, though it is quite familiar from our earlier commentaries. Subjoined to it is a psalm sung with the echoing of similar words. The topics embarked upon are different, but it rejoices in the identity of its exclamation. We say not without justification that its verses are to be called "identical ending," as we have already remarked of Psalm 117, whose four verses end with a similar expression. 1 All that is said is made relevant to the Lord's mercy, without which we cannot exist at all. So it is right that the word mercy should be repeated quite often, since it achieves all things in us through His most generous gifts; if you investigate the root of this great mystery, our entire life depends on the Lord's clemency, and our welfare on His mercy. So the word must not be absent from our lips or our hearts, so that the divine mercy may deign to preserve us by its continual protection. Poets in imitation of this repetition have composed flowery poems with echoing effects, so transferring the sounds of the heavenly virtues to worldly pursuits. But since each and every psalm is seen to contain strengths of many kinds, we can not unreasonably adjudge that this one depicts the perfect life of the just, who undertake the Lord's commands in wholesome fashion, and continually persevere in His mercy. So let us mentally recall that these repeated motifs in verses have subtly revealed the different powers to us in Psalms 8, 23, 41, 45, 48, 56, 66, 102, 103, and I06, as has clearly been explained in those contexts. We shall explain more fully in the conclusion to this psalm the power which it is seen to have.
The prophet speaks throughout the psalm. The whole composition is seen to be like some heavenly basket, interwoven with beautiful repetitions like strands of gold, from which spiritual blessings can be offered like luscious fruits to guests within the Church. But in the initial verses with their varied content the Lord's magnificence is first recounted, and the status of the whole world made clear. In the second section are narrated the miracles which the Lord had performed in