education. For example, the Commandments are included in one of the earliest Christian writings, known as the Teaching of the Twelve Apostles or the Didache. Scholars contend that the Commandments were highly regarded by the early Church as a summary of God's law. The Protestant scholar Klaus Bockmuehl believes that the Church replaced the Commandments with lists of virtues and vices, such as the seven deadly sins, from 400 to 1200. Other scholars contend that throughout Church history the Commandments have been used as an examination of conscience and that many theologians have written about them. While evidence exists that the Commandments were part of catechesis in monasteries and other venues, there was no official Church position to promote specific methods of religious instruction during the Middle Ages. The Fourth Lateran Council (1215) was the first attempt to remedy this problem. Surviving evidence reveals that some bishops' efforts to implement the council's resolutions included special emphasis on teaching the Commandments in their respective dioceses. Centuries later, the lack of instruction in them by some dioceses formed the basis of one of the criticisms launched against the Church by Protestant reformers. Catechisms produced in specific dioceses from the mid-fourteenth century emphasized the Commandments and laid the foundation for the first official Church-wide catechism, the 1566 Roman Catechism. Commissioned by the Council of Trent, it provided "thorough discussions of each commandment" but gave greater emphasis to the seven sacraments to emphasize the Catholic belief that Christian life was dependent upon the grace solely obtained through the sacramental life provided by the Catholic Church. This emphasis conflicted with Protestant beliefs, which held the Commandments as the source of divine grace. While more recent papal encyclicals offer interpretations of Church teaching on individual commandments, throughout history official Church teachings on the Commandments are based on their mentions in the Old and New Testaments and the writings of the early Church Fathers Origen, Irenaeus and Augustine. Later, theologians Thomas Aquinas and Bonaventure offered notable commentaries on the Commandments. Aquinas, a Doctor of the Church, considered them to be the "primary precepts of justice and all law, and natural reason gives immediate assent to them as being plainly evident principles.". Aquinas also underlined the disposition into two synoptic tables, where: "Three of these Commandments that were written on the first tablet referred to the love of God; and the seven Commandments written on the other tablet