The Rev Dr John Span is ordained as a commissioned pastor in the Christian Reformed Church (CRC) and is part of the Returning Church, a group of pastors working towards a return to orthodoxy within the denomination. From 2000–2011, Dr Span worked with a CRC missions team among the Fulbe who Islamized Guinea. In 2012, Dr Span moved to Egypt, where he served for three years as the Vice-Principal of the Alexandria School of Theology. At present, he resides in Canada, where he is employed by Interserve, Canada. In April 2019 he completed his PhD thesis at the John Calvin Faculty in Aix-en-Provence, France. His dissertation analyzes attempted Christianization of the Qur’an in evangelistic strategies and examines their presuppositions from a Reformed perspective.