in saecula saeculorum

[in sahy-koo-lah sahy-koo-loh-roo m; English in sek-yuh-luh sek-yuh-lawr-uh m, -lohr-]

Origin of in saecula saeculorum

literally, for ages of ages
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018