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' ×××).
Psalms Summary. The Book of Psalms is one of the most popular books in the Bible because it covers so many different topics on Christian living. There are 150 poems in this book, which was written by David. Many hymns have been written based off of scriptures in Psalms and the book is widely used during worship services.