Tertullian provides evidence in several writings addressed to catechumens of the ways in which Christian contestations about ritual related to knowledge of God. Against what he describes as the obfuscations of heretical and pagan ritual, Tertullian emphasizes the simplicity of Christian ritual as a fitting mode for expressing true divine power. This chapter focuses on De spectaculis, De oratione, De baptismo, and Tertullian’s appeals to the Rule of Faith.