1 He begins by exhorting the whole world to unite in thanksgiving to God for the favors bestowed on them in general. He repeats the expression, “Sing ye,” three times, as he also in a subsequent part of the Psalm repeats another expression, “Bring ye to the Lord,” three times, in order to glance remotely at a mystery, that of the Most Holy Trinity, that was to be openly promulgated in the new testament.