Judaism

• Is one of six psalms (113-118) of which Hallel
  Hallel
  Hallel is a Jewish prayer—a verbatim recitation from Psalms 113–118, which is used for praise and thanksgiving that is recited by observant Jews on Jewish holidays.-Holy days:...
  
   is composed. On all days when Hallel is recited, this psalm is recited in its entirety.
• Is recited on the first and/or eighth days of Passover
  Passover
  Passover is a Jewish holiday and festival. It commemorates the story of the Exodus, in which the ancient Israelites were freed from slavery in Egypt...
  
  in some traditions.