This thesis will argue that when it comes to the important question of the relationship between the church and those who are not part of it, de Lubac’s response to the question is novel. His writings on the social dimension of dogma are the key to opening up a dialogue with non-Christian religions. The social dimension of dogma de Lubac saw rooted in mystery,highlighting the unique Christian contribution to the right understanding of history and community. We will explore the theological implication of de Lubac’s view that humanity cannot be fully understood apart from Christ. Also, we will make a critical examination of de Lubac’s arguments of how he believes people outside the Judeo-Christian tradition can attain salvation throughthe Church. The thesis will critically examine the different writings ofde Lubac on how he views other faiths and people who do not profess any religion. We will show how de Lubac’s method can serve as a mirror for gauging subsequent theological reflections on whether salvation is possible outside Christianity. Our thesis evaluates how de Lubac explains the theological understanding that the grace of Christ works outside the visible boundaries of the Church. We will argue that linking aspects of de Lubac’s writings on non-Christian religions will assist us in responding to thecomplex challenge of engagement with people of other faiths in the socio-cultural and political context of Nigeria.