For everyone who continues to feed on milk is obviously inexperienced and unskilled in the doctrine of righteousness (of conformity to the divine will in purpose, thought, and action), for he is a mere infant [not able to talk yet]!
There is a great deal that we should like to say about this high priesthood, but it is not easy to explain to you since you seem so slow to grasp spiritual truth. At a time when you should be teaching others, you need teachers yourselves to repeat to you the ABC of God’s Revelation to men. You have become people who need a milk diet and cannot face solid food! For anyone who continues to live on “milk” is obviously immature—he simply has not grown up. “Solid food” is only for the adult, that is, for the man who has developed by experience his power to discriminate between what is good and bad for him.
You have been Christians a long time now, and you ought to be teaching others, but instead you have dropped back to the place where you need someone to teach you all over again the very first principles in God’s Word. You are like babies who can drink only milk, not old enough for solid food. And when a person is still living on milk it shows he isn’t very far along in the Christian life, and doesn’t know much about the difference between right and wrong. He is still a baby Christian!
I have a lot more to say about this, but it is hard to get it across to you since you’ve picked up this bad habit of not listening. By this time you ought to be teachers yourselves, yet here I find you need someone to sit down with you and go over the basics on God again, starting from square one—baby’s milk, when you should have been on solid food long ago! Milk is for beginners, inexperienced in God’s ways; solid food is for the mature, who have some practice in telling right from wrong.