In Invitation and Encounter: Evangelizing Through the Sacraments, theologian, author, and speaker Timothy P. O’Malley shows how the sacraments, as efficacious signs, are Christ working in the Church by the power of the Holy Spirit. This book presents a pastoral introduction to sacramental theology from the standpoint of evangelization. How do sacraments evangelize? How do sacraments both heal and divinize those who receive them?