"Independent and permanent, (made so by the papal bulls Omne datum optimum (1139), Milites Templi (1144) and Militia Dei (1145), TN) the Templars needed the means to sustain themselves. As defenders of the goods of the Church it was appropriate to exempt them from the payment of tithes, while at the same time giving them the right to acquire them, provided that they had the assent of the bishops and their clergy.