How should Catholics prepare for Mass?

Catholics should prepare for Mass through prayer, an examination of conscience, confession of any mortal sin, the Eucharistic fast, modest and dignified dress, arriving early to quiet the mind, and reading the day's Scripture readings beforehand so the heart is ready to worship and receive Christ worthily.

Preparation for Mass begins before we walk through the church doors. Since the Mass is the re-presentation of Christ's sacrifice on Calvary and the source and summit of the Christian life (CCC 1324), we owe it the same reverence and readiness the Israelites gave before approaching the altar. Interior preparation matters more than anything external, though the external supports the interior.

Examine Your Conscience and Confess Mortal Sin

St. Paul warns that whoever eats the bread or drinks the cup of the Lord unworthily is guilty of the body and blood of the Lord, and urges each person to examine himself before communicating (1 Corinthians 11:27-28). The Church therefore teaches that anyone conscious of grave sin must not receive Holy Communion without first going to sacramental confession (CCC 1385). Even apart from mortal sin, a brief nightly or morning examination of conscience helps a Catholic approach the altar with humility and gratitude.

Observe the Eucharistic Fast and Dress with Reverence

Catholics are asked to fast from food and drink, except water and medicine, for one hour before receiving Communion, a small bodily discipline that trains desire toward the Bread of Life rather than earthly food (CCC 1387). Dressing modestly and neatly, arriving a few minutes early, and silencing phones are simple but real ways of honoring the sacredness of the place where Christ becomes truly present.

Pray and Read the Scriptures Beforehand

It is a beautiful and ancient practice to read the Sunday or daily Mass readings ahead of time, asking the Holy Spirit to prepare the soil of the heart for the Word that will be proclaimed (CCC 1100). A short prayer asking for grace to worship well, gratitude for the gift of the Mass, and intentions to offer at the altar all deepen participation. Christ himself invites, Come to me, all you that labour, and are burdened, and I will refresh you (Matthew 11:28), and the Mass is where that invitation is fulfilled most fully.

Finally, arriving with quiet recollection rather than rushing in at the last moment, and remaining briefly afterward in thanksgiving, completes the disposition of a soul that treats the Eucharist as the greatest gift it will ever receive (CCC 1391).