The Ten Commandments
I. I am the Lord thy God. Thou shalt not have strange gods before me.
II. Thou shalt not take the name of the Lord thy God in vain.
III. Remember to keep holy the Lord's day.
IV. Honor thy father and thy mother.
V. Thou shalt not kill.
VI. Thou shalt not commit adultery.
VII. Thou shalt not steal.
VIII. Thou shalt not bear false witness against thy neighbor.
IX. Thou shalt not covet thy neightbor's wife.
X. Thou shalt not covet thy neighbor's goods.
The Great Commandments
I. You shall love the Lord your God with your whole heart, with your whole soul, and with all your mind.
II. You shall love your neighbor as yourself.
By What Authority?
The authority of the Catholic Church to teach and to make laws was given to it by Jesus Christ who said to St. Peter, the first pope of His church,
“Whatever you bind on earth shall be bound also in heaven."
Matthew 16:19