The Sacrament of Holy Communion, also known as Eucharist, is the very source of our entire lives as Catholics because it not just a symbol but really the body, blood, soul, and divinity of Jesus Christ. In the Sacrament, the very essence or substance of the bread and wine is completely changed and Christians enter into unity with Christ and the Church. Because the Eucharist is Christ Himself, we say that the Eucharist is ‘the source and summit’ of the Christian life. The Church encourages all its members, in a state of grace, to partake of Holy Communion weekly at the Sunday Mass.