The Greek word apopsýchō, represented by G674, is defined as to breathe out, i.e. faint. It is formed from the words ἀπό and ψύχω. The term appears only 1 time in 1 unique verse in the Bible, where it is translated as "hearts failing."
The single biblical use of G674 is found in a prophetic context describing future distress. In Luke 21:26, it portrays a scene of immense terror where "Men's hearts failing them for fear." This state of fainting or collapse is a direct reaction to the anticipation of calamitous events coming upon the earth, specifically when "the powers of heaven shall be shaken" Luke 21:26.
Several related Greek words help to contextualize the meaning of G674:
- G5401 phóbos (alarm or fright): This word is directly linked to G674 in its only scriptural appearance, identifying fear as the cause for men's hearts failing Luke 21:26.
- G4531 saleúō (to waver, i.e. agitate, rock, topple): This describes the cosmic disturbance that prompts the fear. The heavens themselves will be shaken, an event that triggers the response of G674 Luke 21:26.
- G444 ánthrōpos (man-faced, i.e. a human being): This specifies who is affected. It is man whose heart fails in this moment of dread, highlighting a universal human response Luke 21:26. The term is used broadly, for instance, in the title "Son of man" Luke 19:10.
The theological weight of G674 is concentrated in its singular, powerful appearance.
- Eschatological Dread: The word is used exclusively to describe the reaction to end-times events. The "failing" of hearts is a physical and psychological response to seeing the foundational elements of creation being shaken Luke 21:26.
- The Power of Fear: The verse underscores that extreme fear G5401 can have a physical, life-threatening effect. The fainting of the heart is not just an emotional state but a profound collapse of human spirit and vitality when faced with overwhelming terror.
- Human Frailty: The term highlights the limits of human endurance when confronted with divine power and cosmic judgment. It shows man G444 in a state of utter helplessness, unable to withstand the signs of the end.
In summary, G674 apopsýchō is a specific and potent term whose meaning is defined by its sole biblical context. It describes the ultimate state of human terror, where a person's life force seems to ebb away in response to overwhelming fear. Its placement in Luke 21:26 forever ties it to the eschatological dread that precedes the final judgment, vividly illustrating the reaction of humanity when the very powers of heaven are shaken.