Since the congregation is singing in worship, does that alleviate my responsibility to sing to the congregation? No (Eph. 5:19). Since the congregation has a program to care for widows, does that remove my responsibility to visit and look after the widows of the congregation? No (Jas. 1:27). You see, congregational activity does not take the place of my individual responsibility.
Apply that to the Great Commission. Since the congregation is supporting missionaries around the world and posting teaching materials on its website and paying a fulltime preacher, does that waive my responsibility to personally teach the gospel to lost souls? No, it does not (Matt. 16:15). Imagine God saying these exact words to you: “The things that you have heard…commit these to faithful men who will be able to teach others also” (2 Tim. 2:2).
A congregation may be very evangelistic (and hopefully all congregations are!), but the Great Commission is given to us individually, as well. How are each of us doing with that?