Heresy of the Day #19: Macedonianism / Pneumatomachianism

Macedonianism, also known as the Pneumatomachian heresy, is a pernicious belief system that emerged in the early 4th century and was propagated by the heretical Greek bishop Macedonius. This insidious heresy denies the personhood of the Holy Spirit and diminishes the divine nature of the Third Person of the Trinity.

The Holy Spirit is not an impersonal f…