My dad is getting a knee replacement, so he’s in the hospital for a few days. Several of his friends visited him, friends who also happen to belong to his congregation. He belongs to a small group in his congregation (a so-called “extended family,” a type of small group that predates the current fad for small group ministries), and during their meeting they called him up and all talked with him.
None of this implies that people who belong to congregations are any better than people who don’t belong to congregations. But congregations tend to set up structures that help us reach out to each other; and congregations tend to set expectations that we will reach out to each other.