outward to the world. It contains the recounting of God’s redemptive acts in history and is polemical, as displayed in the sermons of Peter, Stephen, and Paul.12 For the purposes of discipleship, the types of sermons in which we are most interested are catechetical, doctrinal, and didactic. Doctrinal and didactic sermons can be classified under catechetical preaching, which is directed toward those who are already converted—who have stepped over the threshold of belief and are now disciples, learners
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