This paper delves into the process of evangelization undertaken by the Spanish in the northern frontier of New Spain during the 16th century, specifically targeting the nomadic Indigenous populations known as Chichimecas. Missionaries encountered unique challenges due to the absence of religious infrastructure, robust political authorities, and the nomadic lifestyle of these groups. To overcome these hurdles, the Spanish implemented a strategy that intertwined evangelization with colonization. The text highlights the significance of constructing physical infrastructure in these frontier territories, such as churches, schools, and dwellings, to facilitate the process of evangelization and colonial control. Moreover, it emphasizes the need to impose a social and political structure on these nomadic communities, transforming them into obedient colonial subjects.