Food is for the belly: Food and proper nutrition is life to the flesh (body) and the Word of God (Jesus) is life to the spirit. Matt 4:4
If your flesh is hungry feed it food and drink but, if your soul is hungry feed it (read and study) the Scriptures (the Bible).
1 Corinthians 6:13 AMP
Food [is intended] for the stomach and the stomach for food, but God will finally end [the functions of] both and bring them to nothing.
No matter what foods and how much we eat — we will still be hungry in a few hours or days.
Physical starvation will kill the body while Spiritual starvation will definitely destroy the body and soul.