11 We want to tell you a lot about this. But it is very difficult to explain to you because you are not willing to understand.
Hebrews 5:11

12 You have got so much time that by now you should have become a Guru. But you need, once again, someone to teach you the basics of God’s teaching. You still need teaching like milk. You are not ready for a solid diet yet.
Hebrews 5:12

13 Anyone who lives on milk is an infant. Such a person knows nothing about the true teaching.
Hebrews 5:13

14 But solid food is not for those who are like infants. He is for those who are spiritually mature. Through their daily practice, they have convinced themselves to differentiate between good and bad.
Hebrews 5:14