The primary source at the center of this chapter’s analysis is produced by a Colombian evangelical pioneer and focuses on the expulsion of his family and the evangelical church in the village of La Tulia, Valle, Colombia, in 1949. The autobiographical account, written some years after the event, recounts memories of the experience and its interpretation considering what it meant for him to be an evangelical Christian in Colombia in the mid-twentieth century. The expulsion occurred against the backdrop of a struggle between liberals and conservatives that involved the Catholic Church and the evangelicals, resulting in an unraveling of the social fabric of the communities where the evangelical presence was very important. Pedro Aguirre, author of the text, was the founder of the town of La Tulia, Valle, and a social and liberal leader who, after having supported the construction of the Catholic temple, abandoned Catholicism for Protestantism. The analysis aims to identify the elements at play in the construction of evangelical memories, which will facilitate not only the use of the source itself but also a deeper understanding of the context in which it was produced.