Hallel

Psalm 113-118; Matthew 26:30; Mark 14:26; Psalm 136; Psalm 118-136; Psalm 120; Psalm 135:4
This term, which signifies “praise,” is used by the Jews in reference to certain of the Psalms.
1. The Egyptian Hallel embraces Psalm 113-118. It was so called because it was chanted in the temple while the Passover lambs, which were first enjoined in Egypt, were being slain. It was also chanted in private when the Passover was kept; and it is thought that the “hymn” mentioned in Matthew 26:3030And when they had sung an hymn, they went out into the mount of Olives. (Matthew 26:30) and Mark 14:2626And when they had sung an hymn, they went out into the mount of Olives. (Mark 14:26) refers to part of this Hallel.
2. The Great Hallel. This is so called because of including Psalm 136, in every verse of which is the response “His mercy endureth forever.” Maimonides says it includes Psalm 118-136. Others say it begins at Psalm 120 or Psalm 135:44For the Lord hath chosen Jacob unto himself, and Israel for his peculiar treasure. (Psalm 135:4). It was recited on the first evening of the Passover, also on any special occasion.