The frescos on the walls and ceiling were created by a local artist, Miguel Antonio Martinez de Pocasangre in the "folk baroque" style.

Since the church is dedicated to Jesus of Nazareth, many of the frescoes depict scenes in the life of Christ. But the good priest and Sr. Pocasangre seemed to prefer the bloodier events in the Savior’s life. The swirling color and form seem to focus heavily on blood and suffering.