A longtime Colorado pastor and radio host who espoused vaccine conspiracy theories has died of COVID-19. 

Bob Enyart of Denver Bible Church claimed the coronavirus vaccine was tested on “cells of aborted babies,” as The Guardian reported. He passed after contracting the virus.

“It comes with an extremely heavy heart that my close friend and co-host of Real Science Radio has lost his battle with Covid,” Enyart’s co-host Fred Williams wrote on Facebook. “Bob Enyart was one of the smartest, and without question the wisest person I’ve known. All the while being exceedingly kind and humble, and always, always willing to listen and discuss anything you wanted.”

Reports of Enyart’s death come two weeks after Denver Bible Church said its pastor and his wife were in “good hands and improving daily” at a hospital.