Pope Celestine V
The precepts here implied came to be regarded as special Commandments of the Church. Thus in a book of tracts of the thirteenth century attributed to Pope Celestine V (though the authenticity of this work has been denied) a separate tractate is given to the precepts of the Church and is divided into four chapters, the first of which treats of fasting, the second of confession and paschal Communion, the third of interdicts on marriage, and the fourth of tithes.