During fieldwork from October 2018 to September 2019, the author participated in numerous celebrations, language, and catechism courses, as well as events organized by five community churches in Montreal, and encountered many of their members, most of whom represent different generations of migrants. The immigrant communities affiliated to the different churches are Portuguese, Italian, Greek, Latin American (as they identify themselves), and Filipino. This paper aims to highlight the different language socialization practices examined in these five churches. Are these community institutions conducive to the immigrants' socialization in and to their heritage languages? The author argues that the churches studied generate spaces of socialization to and through heritage language at various scales from one speech context and church to another. Finally, the paper provides some insight into these variabilities.