[4] But he (or Jesus) answered and said, It is written (with assurance in Deuteronomy 8:3), Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God (perpetually; also see Luke 4:4).
Takeaway: Life for members of the human family is sustained by fulfilling the physiological need to consume a well-balanced diet of nutrition. This practical approach is instrumental in the proper mental and physical health of the human body.
In like manner, the daily intake of Scriptural principles provides the human spirit with the power giving continuance of life and the capacity for meaningful or purposeful existence.