Inviting them in vs. them inviting you in
There are two ways for the Gospel to flow: you invite people to church, or the people to invite the church (a la you) to them.
When you invite them into church, there’s a limit to how much of their social circle will actually end up in church. Maybe their immediate family, maybe just them.
When they invite the church (you) into their family and social circle, there is no limit (except the natural limits of their social network).