 During the fall of 1536 , Farel drafted a confession of faith while Calvin wrote separate articles on reorganizing the church in Geneva . On 16 January 1537 , Farel and Calvin presented their Articles concernant l 'organisation de l 'église et du <unk> à Genève ( Articles on the Organization of the Church and its Worship at Geneva ) to the city council . The document described the manner and frequency of their celebrations of the Eucharist , the reason for , and the method of , excommunication , the requirement to subscribe to the confession of faith , the use of congregational singing in the liturgy , and the revision of marriage laws . The council accepted the document on the same day . 
