Question 55 What do you understand by |the communion of saints|?

What do you understand by "the communion of saints"?

First, that all and every one, who believes, being members of Christ, are in common, partakers of him, and of all his riches and gifts; [175] secondly, that every one must know it to be his duty, readily and cheerfully to employ his gifts, for the advantage and salvation of other members. [176]