He served as executive director of the School of Ministry at Celebration Church in Jacksonville, Florida, and previously as scholar-in-residence at Faithlife Corporation.
He had additionally been active in media productions around his area of interest, and in response to popular presentations relating to spiritual matters (such as material in the Stranger Things series, and in rebutting ancient astronaut conjectures).
[8][9] Beginning in 2015, Heiser published at least ten books regarding the meaning of various biblical concepts, and on other topics related to popular understandings of spirituality; in addition, he produced two works of fiction, in the early 2010s.
[12] He was Executive Director of the School of Ministry at Celebration Church in Jacksonville, Florida, and a distance-learning professor at Liberty University[13][14] and Midwestern Baptist Theological Seminary.
[22] On January 4, 2023, his wife Drenna, posting on his Instagram page with an accompanying picture of the hospitalized Heiser, noted that he had been admitted for severe anemia, that physicians had stabilized him and were seeking to determine a source of blood loss.