Psalm 115 is the 115th psalm of the Book of Psalms.
Judaism
Is one of six psalms (113-118) of which Hallel is composed. On all days when Hallel is recited, this psalm is recited in its entirety, except on Rosh Chodesh and the last six days of Passover, when only verses 1-11 are recited.
Verse 2 is found on the long Tachanun recited on Mondays and Thursdays.