"Religious zeal" refers to an intense and passionate dedication or enthusiasm towards one's religion or religious beliefs. It implies a deep commitment and fervor in practicing and promoting one's faith. Full definition
We as humans will experience the waxing and waning of religious zeal for as long as humankind survives on this earth. (religion.blogs.cnn.com)
However, it will refrain from the arrogance, the bad manners, and the assault on human personality sometimes found in connection with religious zeal. (religion-online.org)
But others question the tech world's (and increasingly corporate America's) near - religious zeal for relentless innovation, particularly of the «disruptive» variety. (canadianbusiness.com)