Commento Cattolico di George Haydock
Salmi 21:4
In the, &c. Hebrew, "the Holy one inhabitest the praises of Israel," or "Thou holy, sancte, inhabitant, the praise," (St. Jerome) or, as the plural intimates, the source and object of all "the praises of Israel," (Haydock) and of the Church. (Worthington) --- This may be connected with the preceding, or following verse. Thou art in the midst of us, so that thou canst not be ignorant of my situation, like the idols; or thou hast shewn great favours to our ancestors, ver. 5. Theodoret and St. Jerome seem to take these words to be addressed by the Father or by the prophet to Jesus Christ, who inhabited a body so free from sin. (Calmet)