“For though by this time you ought to be teachers, you need someone to teach you again the first principles of the oracles of God; and you have come to need milk and not solid food” (Hebrews 5:12).
Few, if any, adults enjoy a liquid diet, especially if it should last for weeks. The variety on such a diet is limited. The enjoyment of a tasty hamburger, or fried chicken, or pizza, potato chips, and popcorn is eliminated. Such a basic and bland diet is unappealing to an adult palate.
Though it was not quite a liquid diet, the Israelites grew weary of a manna diet (Numbers 11:4-6). It brought them to tears as they longed for the fish, cucumbers, melons, leeks, onions, and garlic that had been part of their diet while they were enslaved (Numbers 11:5).
The same opposition you would feel toward the idea of a liquid diet ought to be felt about a spiritual diet of only milk from God’s word. It makes no sense to have an entire set of permanent teeth and yet voluntarily choose a liquid diet.
Are you trying to live spiritually on a liquid diet?