Heidelberg Catechism · Lord's Day 21
55. What do you understand by the communion of saints?
Answer
First, that believers, all and everyone, as members of Christ have communion with him and share in all his treasures and gifts. Second, that everyone is duty-bound to use his gifts readily and cheerfully for the benefit and well-being of the other members.
Scripture references
Question 55 of 129
Study it, question by question
Bosko turns the catechism into a few minutes a day — one question at a time, spaced so the answers actually stick, with an AI companion grounded in the Reformed tradition to talk through whatever you don't yet grasp.

