chained_bear commented on the word mackerel-snapper I get the fish-eater thing, but I don't know why non-Catholics wouldn't want mackerel--evidenced by the use of the term in a disparaging phrase. (Or wouldn't want snapper, for that matter.)
Psalm 1 is the first of the Psalms in the Hebrew Bible. Like many of the psalms, it contrasts the  righteous  person (tzadik ×¦×××§) to the wicked or ungodly (rasha` ×¨×©×¢) or the  sinner  (chatta' ×××).
These words were the beginning of one of Davidâs psalms (Psalm 22:1). The New Testament writers understood that Davidâs words concerning his own situation applied even more fully to Christâs suffering. In addition to the direct quotations, there are numerous allusions to this psalm in the New Testament.