In this article the phrases "getting in" and "staying in" relate to the technical term "covenantal nomism". The article's aim is to argue that this concept is radically redefined in the so-called "great commission" in Matthew 28:16-20. Inclusivity replaces ethnic exclusivism. This redefinition is applied to the well-being of the church and its spirituality in the present-day postmodern context. The article is specifically addressed to the members of the Nederduitsch Hervormde Church in South Africa. It challenges the traditional dichotomy between "insiders" and "outsiders" in missionary work. It advocates a way of thinking in terms of which "non-conformists" in so-called "churchless Christianity" are considered as being part of the "church on the other side"