The Most Holy Eucharist commemorates the agony, death and rising from the dead of the Son of God. The Eucharist is one of the most venerable and the most blessed sacraments which Jesus Christ appointed for man. Christ Himselfis contained in the sacrament. The Holy Eucharist is the source of life for the Church and it enables the Church to grow spiritually. Furthermore, the sacrament of the Eucharist constitutes the Church and determines its missionary purposes.Therefore, every Catholic should be aware of the fact he/she is obliged to take an active part in Holy Mass on Sunday and the Holy Days of Obligation, if they want to follow Jesus Christ faithfully in their life and fulfill the duties resultingfrom the call, in a manner corresponding to their vocation.