The catalyst for this was a Mass in February 1208 at the chapel of St. Mary of the Angels. The Gospel lesson from Matthew was about the Apostles going out to proclaim the Kingdom of God. He began preaching and collected 11 followers who lived with him in an abandoned leper colony near Assisi called Rivo Porto.
The original rules of the order that Francis presented to Pope Innocent III are not now known, but according to his biographer and friend, Thomas of Celano, it was some passages from the Gospels. It was revised and expanded over time, but its basis was a rejection of personal property, as well as obedience and chastity. Francis and his followers were also tonsured while in Rome as a sign of their formal endorsement by the pope. Official recognition as an order and their fervent preaching helped the order to grow quickly.
The Rule of the order was revised each year, according to Jacques de Vitry in a letter he wrote in 1216. Amendments were proposed, and Francis would berate them for errors in behavior. While Francis was traveling in the East because of the Crusade, he had to leave the Order in others' hands. First was Brother Peter Catani, but he died within months. Then it went to Brother Elias. Some times, those left in charge of the Order in Italy were making changes that Francis did not want. One was a prohibition against eating meat, but Francis pointed out (on his return) that Acts 10:15 says "What God has made clean, you are not to call profane."
A final re-formulation of the Rule came in 1223, and it is what is followed today.
The most familiar image of Francis was not writing rules or traveling in the East, it is him among animals. Let's look at that facet of his life and beliefs tomorrow.
