George Haydock's Catholic Commentary
Psalms 131:15
Widow. Whose name is often joined with orphans, and the poor, as the Hebrew Tsedah may imply one "desolate," 1 Timothy v. 5. (Berthier) --- The Greek copies vary: some have widow, and others, "prey," which is most commonly given as the sense of the Hebrew. (Haydock) --- The poor priests and Levites, who had no land, shall be abundantly supplied. (Calmet) --- The Church, though deprived of Christ's visible presence, is replenished with many blessings, and her humble children are relieved with the holy Sacraments. (Worthington)