What does the Bible say about living by God's word?

In Deuteronomy 8:3, the Scripture emphasizes that our sustenance goes beyond mere physical provisions. It conveys that while earthly provisions like bread are necessary, true life is found in the words of God. This passage illustrates God's desire to separate His people from those who are solely focused on material needs, urging us to recognize that our spiritual nourishment comes from the divine truths expressed in His Word. Therefore, our spiritual existence is intricately linked to God's revelations.