Why do Catholics use holy water?

5 min

Awaiting theological review

The simple answer

Holy water is ordinary water that a priest or deacon has blessed with a prayer. Catholics dip their fingers in it when they enter a church and make the Sign of the Cross. The gesture recalls the day of their baptism, when water and the name of the Father, the Son and the Holy Spirit made them part of God's family. Holy water is also sprinkled on people, homes and objects when they are blessed, and many families keep a little at home.

In the Bible

Scripture

Water runs through the whole of Scripture as a sign of God's life and cleansing: the Spirit over the waters at creation, the people of Israel passing through the Red Sea, and Jesus baptised in the Jordan.

Genesis 1:2 · Exodus 14:21–22 · Matthew 3:13–17

Scripture

Through Ezekiel, God promises to pour clean water on his people, to cleanse them and give them a new heart and a new spirit.

Ezekiel 36:25–26

Scripture

In the Psalm of repentance, the psalmist asks God to sprinkle him with hyssop so that he may be cleansed. This verse is sung in the old rite of sprinkling at Mass.

Psalms 50:9

Scripture

From the side of Jesus on the Cross flow blood and water.

John 19:34

Interpretation

The Fathers of the Church read the blood and water from Christ's side as a sign of the sacraments of the Eucharist and Baptism. This is interpretation, not the text of the Gospel.

John 19:34

Where it comes from

Early Christian source

Prayers for blessing water outside baptism appear in early Christian collections of prayers, such as the Apostolic Constitutions (late 4th century).

Apostolic Constitutions VIII (late 4th century; locator awaiting verification)(awaiting verification)

Historical context

Early basilicas often had a fountain in the courtyard where people washed before entering. The holy water font at the church door is usually seen as its descendant, though the exact line of development is not certain.

Historical context

In the Middle Ages, the Sunday sprinkling of the people with holy water before Mass became widespread, sung to the antiphon taken from the Psalm of repentance.

Tradition

The older rite mixed blessed salt into the water, recalling the prophet Elisha, who healed a spring with salt.

2 Kings 2:19–22

What the Church teaches

Catechism

Holy water is one of the sacramentals: sacred signs instituted by the Church that prepare people to receive grace and sanctify ordinary moments of life.

CCC 1668

Church teaching

Sacramentals do not work like the sacraments: they do not give grace by themselves, but through the prayer of the Church and the faith of the one who uses them.

Catechism 1670 (number awaiting verification)(awaiting verification)

Church teaching

On Sundays, especially in the Easter season, the Roman Missal allows the blessing and sprinkling of water to take the place of the penitential act at the start of Mass, as a reminder of baptism.

Roman Missal, Rite for the Blessing and Sprinkling of Water (locator awaiting verification)(awaiting verification)

Catechism

Popular piety, such as the use of holy water, is good when it leads people to Christ and to the liturgy of the Church.

CCC 1674

A common misunderstanding

Holy water protects you by itself, like a charm, and the more you use the better it works.

In fact

Holy water has no power of its own. It is a sign that points to baptism and a way of praying with the body. What matters is the faith with which it is used and the God to whom it points.

Why it matters today

Entering a church with wet fingertips and the Sign of the Cross is a way of saying: I belong to Christ, I was baptised, I am coming home. Many parents also bless their children with holy water at bedtime or before a journey.

Bible passages

Genesis 1:2 · Exodus 14:21–22 · Matthew 3:13–17 · Ezekiel 36:25–26 · Psalms 50:9 · John 19:34 · 2 Kings 2:19–22

Catechism

CCC 1668; 1674 ↗