No sacrament is richer in meaning and symbolism than the Eucharist. Vatican II described it as especially, among the liturgies of the Church, ‘the source and summit of the Christian life’ (Constitution on the Sacred Liturgy, I, 10).
The primary elements of the Eucharist are bread and wine, symbolic of basic nourishment for life. These core symbols, however, require the necessary interrelationship of the other symbols of the Eucharist: the presider, the Word and the gathered community. By invocation of the Holy Spirit, Jesus, who is the Bread of Life, is present sacramentally. Christians are fed at this table of the Lord. The first fruit of their sacramental nourishment is a closer union with Christ. ‘Those who eat my flesh and drink my blood abide in me, and I in them.’ (John 6:56) Consequently, through Communion, one is bound more closely in charity to all who form the mystical Body of Christ. One is fortified against sin and strengthened to meet the challenges of the Christian life.
Not to be neglected is the nourishment received from the word of God that is proclaimed and broken open during the Mass. ‘The Eucharistic table set for us is the table both of the Word of God and of the Body of the Lord.’ (Vatican II) When the Scriptures are proclaimed in the community, Christ is present as God's Word, nourishing our minds and understanding, and deepening our faith.