'Milk' in the Bible

I gave you milk to drink, not solid food, because you were not yet ready for it. In fact, you are still not ready,

Who ever goes to war at his own expense? Who plants a vineyard and does not eat its fruit? Or who shepherds a flock and does not drink the milk from the flock?

Although by this time you ought to be teachers, you need someone to teach you the basic principles of God’s revelation again. You need milk, not solid food.

Now everyone who lives on milk is inexperienced with the message about righteousness, because he is an infant.

Like newborn infants, desire the pure spiritual milk, so that you may grow by it for your salvation,