St. Photius the Great

“The Savior of our race, employing all means to free man from deception, has shared with us who obey Him heavenly and divine good things. But to the disobedient he has shown that there awaits them not temporal torments that abide for a time, but eternal and everlasting torments.”

— Amphilocius, 6

“When anyone goes into sin, his thoughts are as it were enchained and his vision is changed for the worse through that by means of which the evil one, instigating and flattering, weakens and darkens us. But after the sin has been committed he sets before our eyes what we have done and cruelly reveals that to which he has drawn us with much guile and, condemning the severity of the deed, endeavors by the same to draw the sinner into despair.”

— Amphilochius, 14