From the Introit of the Mass for today’s Feast of the Most Precious Blood of Our Lord Jesus Christ (Apoc. 5.9-10):
Redemisti nos, Domine, in sanguine tuo, ex omni tribu, et lingua, et populo, et natione: et fecisti nos Deo nostro regnum. * Misericordias Domini in aeternum cantabo: in generationem et generationem annuntiabo veritatem tuam in ore meo.
Thou hast redeemed us, O Lord, in Thy blood, out of every tribe and tongue, and people and nation, and hast made us to our God a kingdom. * The mercies of the Lord I will sing for ever: I will show forth Thy truth with my mouth to generation and generation.
(Apoc. 5:9-10 and Psalm 88:2 from the Introit of Mass)