The language of sermons has been studied mainly from the stylistic and semantic perspectives by linguistic scholars. However, little attention has been paid to the text discourse. This study therefore explored the structural components in selected Nigerian Christian homilies. The churches were categorized into the Mission, the Ethiopian, the African Indigenous and Pentecostal churches. Two sermons were randomly selected from each of these groups. Data were analyzed using the Systemic Functional approach. Findings reveal that the distribution patterns of the thematic and information structures were similar in the various church groups. However, more instances of the varied patterns located in the Pentecostal churches reflect their less prescriptive worship styles and more aggressive evangelical nature than their Mission, Ethiopian and African Indigenous counterparts. Thus, structural resources and strategies are central to the effective delivery and understanding of messages presented in Christian sermons. The study concluded that since the potency of the language of sermons to inspire and mobilize the laity is not in question, such language can be adopted outside the traditional confines of the church in teaching in the classroom and packaging mass mobilization programs, and thus define homilies as a diatype of Nigerian English.