George Haydock's Catholic Commentary
Psalms 134:4
Possession. Hebrew, "jewel," "property." Chaldean, "well-beloved." See Deuteronomy lii. 8., and Ecclesiasticus xvii. 14. (Calmet) --- The first patriarchs corresponded with God's goodness: but their descendants were for the most part ungrateful: so that Christians have now entered into their place, and must praise God. (Berthier)