What word or phrase does your mother always say?
late 14c., from Latin alleluja, from Greek allelouia, from Hebrew hallelu-yah "praise Jehovah" (see hallelujah).
the Greek form (Rev. 19:1, 3, 4, 6) of the Hebrew Hallelujah = Praise ye Jehovah, which begins or ends several of the psalms (106, 111, 112, 113, etc.).