The kind of church that reaches unbelievers and the unevangelized will likely not be understood nor appreciated by those who are already believers and trying to attract their children to church. In fact, the forms of church that teach unbelievers and help unbelievers follow Christ and reach other believers... May be felt as invalid forms of church by longtime believers! "Who gave you permission to start groups? To make disciples? To share the gospel? To take communion together?" Many reasons for this conflict, but it is not abnormal for it to happen. Expect it and prepare for it.