Though millions have been deceived by false teachers on the matter, the Scriptures—Old and New Testaments alike—teach the possibility of apostasy. Hebrews 3:12 somberly warns against it—”Beware, brethren, lest there be in any of you an evil heart of unbelief in departing from the living God.” The word translated “departing” is aphistemi; it literally is the Greek word for apostasy.
In various locations in Psalm 106, the writer identifies the fatal first step of apostasy. It is spiritual amnesia, a failure to remember. It is written, “They did not remember the multitude of Your mercies…They soon forgot His works…They forgot God the Savior” (vv. 7, 13, 21).
Always remember: Spiritual amnesia is fatal to your faith.