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What Is Kyrie Eleison?

Kyrie eleison is an ancient Greek Christian prayer meaning “O Lord, have mercy,” sung or spoken in many liturgical services as a petition for mercy, forgiveness, and grace during worship.

Church Glossary · Worship service & liturgy · Updated November 5, 2026

Kyrie eleison

Kyrie eleison is a Greek Christian prayer meaning “O Lord, have mercy.” In many American churches, it is spoken or sung near the beginning of worship as a petition for mercy, forgiveness, and help hearing God’s word. It is commonly shared by the congregation.

What Does “Kyrie Eleison” Mean?

The wording is ancient Greek: kyrie is the vocative form of kyrios, meaning “lord,” and eleison means “have mercy.” Together they form a direct petition, “O Lord, have mercy.” Congregations often pronounce it “kee-ree-eh eh-LYE-son,” though English pronunciation varies.

Where Does It Appear in Worship?

In the Roman Catholic Mass, “Kyrie, eleison” forms the first musical section of the Mass Ordinary, a fixed set of liturgical songs. Eastern Orthodox use the Greek petition in the Divine Liturgy and other offices, where it is commonly translated “O Lord, have mercy.” Anglican and Episcopal services and many Lutheran services also include it in set prayers, confession, or the invocation.

Other Protestant churches may use the English “Lord, have mercy” as a call and response without using the Greek. A congregation’s worship book sets the wording, placement, and reply.

How Is It Said?

In the Roman Catholic Mass, the pattern is “Lord, have mercy” followed by “Christ, have mercy.” Orthodox worship commonly repeats the Greek petition, while some Anglican and Lutheran orders use English wording. A priest, minister, cantor, or other leader may begin, and the congregation may answer. The phrase may be spoken, chanted, or sung, and it is often repeated three times.

Is Kyrie Eleison a Song?

It is fundamentally a short prayer, but it can be a chant or a worship song when a melody is used. The familiar Roman Catholic Kyrie is ordinarily heard three times. Contemporary worship services may also sing “Lord, have mercy” to a repeated melody. The musical setting changes the sound and length, not the petition’s basic meaning.

What Should a First-Time Visitor Know?

No Greek is required, and saying the response is not a sacramental act. Follow the cues in the order of service: the leader says or sings one part, and the congregation gives the response. Visitors can stand, sit, or kneel when others do, and an usher can explain what happens next. The first-time visitor guide offers broader help for anyone attending an unfamiliar service. Listen for the first repetition and join with the congregation.

Frequently asked questions

Is “Kyrie” the same as “Kyrie eleison”?

Not exactly. “Kyrie eleison” is the full Greek petition, “O Lord, have mercy.” “Kyrie” alone means “Lord” and also names the first musical section of the Roman Catholic Mass Ordinary, where the threefold call and response is sung.

Why is the prayer commonly repeated three times?

The repetition gives the assembly time to make the petition together and gives it added emphasis. It is an established pattern rather than a new phrase each time. The number, placement, and wording are fixed by the worship book used by a particular congregation.

What if I do not understand the Greek at a service?

You can still take part by listening for the leader’s call and joining the English response when the congregation does. Printed orders of service often include the translation. If the printed sheet has only Greek, an usher or greeter can identify the response before or after the service.

Related terms

All terms
  • Call to worship A call to worship is the opening summons that invites a congregation to worship, usually at the start of a service; it may be a pastor’s welcome, a spoken invitation to sing or pray, or a liturgical opening.
  • Mass Mass is the Roman Catholic Church’s principal form of communal worship, centered on the Eucharist and including Scripture readings, prayers, the consecration of bread and wine, and Communion.
  • Divine Liturgy The Divine Liturgy is the principal Eucharistic service used especially by Eastern Orthodox and Eastern Catholic churches, combining Scripture, prayers, music, Communion, and the final blessing.
  • Liturgy Liturgy is the ordered form of a church's public worship: its set prayers, Scripture readings, hymns, gestures, and Communion, especially in Catholic, Orthodox, Anglican, and Lutheran traditions.