According to Luther, the most important aspect of Christian kingship had been to ensure that there is religious purity within the spirit and the ministry of a Christian individual. This implies that there has to be religious teachings acquired in its purest and unchanged or earliest form possible There must also be no modifications made to the early teachings of the church by any Christian individual claiming Christian kingship for the welfare of Christian subjects. Any additions to the early religious teachings can also be considered to be something added to change the purest form of Christian kingship.