the.com/hallelujah

means An exclamation of praise, relief, or joy, originally directed to God, now also shouted whenever anything finally goes right.

from From Hebrew 'hallĕlū yāh' — 'praise ye Yahweh' — built from the verb 'hallel' (to praise) and 'Yah,' a short form of God's name. It passed into Greek and Latin scripture as 'alleluia' almost unchanged, carried through centuries of liturgy and song, which is why it still sounds like a chant even when you're just yelling it at your Wi-Fi router.