Evangelii Gaudium §126

126. Underlying popular piety, as a fruit of the inculturated Gospel, is an active evangelizing power which we must not underestimate: to do so would be to fail to recognize the work of the Holy Spirit. Instead, we are called to promote and strengthen it, in order to deepen the never-ending process of inculturation. Expressions of popular piety have much to teach us; for those who are capable of reading them, they are a locus theologicus which demands our attention, especially at a time when we are looking to the new evangelization.