Georg Friedrich Bernhard Riemann, or Bernhard Riemann as he is commonly known, was a devout Lutheran and brilliant mathematician, and was both for all his life. His results are indispensable, providing us with a non-Euclidean geometry, the path to general relativity, and perhaps in time, the key to the problem of the distribution of primes. His faith in God was exemplified both through his mathematics and his home life for as long as he lived, and his example is one to which we may aspire as both mathematicians and simply as Christians.
Crook, Andrew, "Bernhard Riemann" (2017). Math Class Publications. 11.