This extract from Psalm 51, known traditionally as the Miserere, forms the responsorial psalm at the Easter Vigil (optional when there are no baptisms). Its antiphon, “Create a pure heart for me, O God,” is taken directly from verse 12 and is repeated after each strophe. The selected verses (12-13, 14-15, 18-19) distil the psalm’s central plea for interior renewal and a contrite spirit.

The psalm’s origins lie in the Hebrew Bible’s Book of Psalms. Its superscription attributes it to King David after the prophet Nathan confronted him for committing adultery with Bathsheba and arranging the death of her husband Uriah (2 Samuel 11–12). Whether composed by David himself in the tenth century BC or by a later poet drawing on that dramatic story, the text is one of the seven Penitential Psalms. It moves from confession of sin to a profound prayer for cleansing, restoration, and the gift of a “pure heart” and “steadfast spirit.” The final strophe rejects external animal sacrifices in favour of the only offering God truly desires: “a broken and humbled heart.”

At the Easter Vigil in the Holy Night – the most solemn liturgy of the Christian year – these verses carry rich significance. They are sung immediately after the seventh Old Testament reading, usually Ezekiel 36:16-28, in which God promises to give his people a new heart and a new spirit, to cleanse them with water, and to put his own Spirit within them. The psalm responds to this prophetic promise with urgent petition and joyful resolve. “Create a pure heart” echoes the very language of Ezekiel and anticipates the sacrament of Baptism that follows: the washing away of sin, the infusion of the Holy Spirit, and the rebirth of the baptised into new life in Christ.

The imagery of a “broken spirit” as the acceptable sacrifice also points to the Paschal Mystery being celebrated. On this night the Church proclaims that Christ’s once-for-all offering on the Cross has superseded all Temple sacrifices. The assembly, having journeyed through the stories of creation, exodus and covenant, is invited to offer its own contrite hearts so that it may rise with the Risen Lord. The psalm therefore bridges Old Testament repentance and New Testament resurrection joy, reminding every worshipper that Easter is not merely a historical commemoration but a personal and ecclesial renewal: a fresh creation wrought by the Holy Spirit. In the candle-lit darkness of the Holy Night, its words become a collective prayer for the grace that makes all things new.