“is is the Day the Lord has made; let us rejoice and be glad in it! Alleluia” at beautiful statement is the refrain from the responsorial psalm for Easter Sunday. it is a part of psalm 118, a powerful (and lengthy) psalm of anksgiving, and one with which we are more than likely very familiar, with verses such as “Give thanks to the Lord for He is good, for His mercy endures forever….By the Lord has this been done; it is wonderful in our eyes.” e psalm, proclaimed by King David many generations before Jesus came into the world, anticipated that great “Day of the lord” when all things — all creation — all humanity would be made new.