There are thus four groups of Hallel psalms: - civ.-cvii.
But where did the last collectors of the psalms find such very ancient pieces which had 1 Possibly under Simon; compare the other hallel (Ps.
Cxlv., if, as seems probable, it is meant to cover the whole of the great hallel or tehilla (Ps.
From the 3rd century the use of the Hallel was extended to other occasions, and was gradually incorporated into the liturgy of eighteen festal days.
It will be observed that the extent of the official Hallel varied from time to time.
The name is not therefore equally applicable to all psalms, and in the later Jewish ritual the synonym Hallel specially designates two series of psalms, cxiii.