This paper uses developments in externalist epistemology and philosophy of mind as a foundation for a tolerance-producing attitude of epistemic humility towards the beliefs one retains in light of religious diversity. The first section of this paper describes the conditions under which epistemic humility tends to occur in both the philosophy of mind and externalist epistemology due to what shall be called the resolution problem, and the second section argues that these conditions often obtain in the presence of religious diversity. A third section argues that epistemic humility tends to lead to religious tolerance.