What does John 4:34 mean?
Food is meant to refresh and recharge the body. A body which does not consume the right kinds of food will be weak, ineffective, and sickly. On the other hand, eating a good meal provides the body with energy and strength. Spiritually speaking, the "food" of our spirit is the will of God. Jesus was tired and weary from a long journey (John 4:6). And yet, simply following the will of God gave Him a spiritual boost (John 4:31–33).This makes sense when we consider the idea of God as the Creator. If we are created for a purpose, and that purpose is the will of God, then it makes sense that we feel best when we're accomplishing that purpose. Jesus quoted from Deuteronomy 8:3 when being tempted by Satan (Matthew 4:1–11). His comment then was that "It is written, 'Man shall not live by bread alone, but by every word that comes from the mouth of God'" (Matthew 4:4). There is more to our lives than simply keeping the physical body alive; we have a purpose beyond this world. We can't feel "right" unless we're living out that purpose. We can't help but feel refreshed when we've made progress on behalf of the One who created us.