The article aimed at finding out the effect of using Islamic Textual Enhancement Model in teaching complex sentences for English Students at IAIN Bukittinggi. The necessity of teaching grammar in EFL field has long been debated. Some deny its importance; others maintain it. However, amidst all these arguments, the importance of presenting language input to help students transfer the input into intake through reinforcing them to notice it is agreed upon. Therefore, the appropriate grammar instructional model needs to be selected. The researcher applied a quasi-experimental research by giving pretest to see initial ability at the sample classes.  There were two classes involved as the experimental is III C and the control group is III D chosen purposively. The researcher taught grammar by using Islamic Textual Enhancement Model in experimental class meanwhile in the control class grammar was taught traditionally (PPP Model) from Azar’s Book.  After a series of treatment process, post-test was administered. The finding reveals that teaching complex sentences using Islamic Textual Enhancement Model is more effective than traditional way since the target input is more salient so that the students notice the complex sentences in context as it can be seen from gain scores from both classes for ½ sign (2-tailed) is higher than alpha .005. In conclusion, using Islamic Textual Enhancement Model in teaching grammar for EFL class at Islamic institution is appropriate because the model provides contexts for students to study grammar features.T