After the priest, in virtue of the sacred ordination he has received, the deacon has first place among those who minister in the celebration of the Eucharist. The sacred order of the diaconate has been held in high honour in the Church since the time of the Apostles. At Mass, the deacon proclaims the Gospel reading, sometimes preaches God's Word, announces the intentions of the Universal Prayer (Prayer of the Faithful), ministers to the priest, prepares the altar and serves the celebration of the sacrifice, distribute the Eucharist to the faithful, and from time to time gives directions regarding the people's gestures and posture.
When there is a deacon present at the Eucharistic celebration, he should exercise his ministry wearing sacred vestments.
The deacon:
Introductory Rites
Liturgy of the Word
Liturgy of the Eucharist
Concluding Rites