Some Duties of Catholic Christians
Precepts of the Church

1. "You shall attend Mass on Sundays and holy days of oblation and rest from servile labor." The first precept requires the faithful to sanctify the day commemorating the resurrection of the Lord as well as the principal liturgical feasts...by participating in the Eucharistic celebration...and by resting from those works and activities which could impede such a sanctification of these days.
    
2. "You shall confess your sins at least once a year." The second precept ensures preparation for the Eucharist by the reception of the sacrament of reconciliation, which continues Baptism's work of conversion and forgiveness.
    
3. You shall receive the sacrament of the Eucharist at least during the Easter season." The third precept guarantees as a minimum the reception of the Lord's Body and Blood in connection with the Paschal feasts, the origin and center of the Christian liturgy.
    
4. You shall observe the days of fasting and abstinence established by the Church." The fourth precept ensures the times of ascesis and penance which prepare us for the liturgical feasts and help us acquire mastery over our instincts and freedom of heart.
    
5. "You shall help to provide for the needs of the Church." The fifth precept means that the faithful are obliged to assist with the material needs of the Church, each according to his ability.