“And they devoted themselves to the apostles’ teaching and the fellowship, to the breaking of bread and the prayers.”
Acts 2:42

After hearing the Gospel at Pentecost, the people responded anew – with the Gospel. Here’s what I mean, the believers devoted themselves to learning more and more of the fulness of the Gospel, and then, realizing they belonged to the family of Christ, they spoke it repeatedly into each other’s lives as they lived it before one another. Therefore, a crucial, baseline element of authentic Christian community is what we are intentionally devoted to and talk about, and that must be the living, transforming wonders of Christ the Lord. If we principally talk about our purchases, trips, movies, children, or even new interests, then we have a nice club that won’t change a fallen thing.