“Surely, some of you priests could close the temple doors and light the fires correctly. I am not pleased with you. I will not accept your gifts.” The Lord All-Powerful said these things.
You have had enough time that by now you should be teachers. But you need some person to teach you again the first lessons of God’s teaching. You still need the teaching that is like milk. You are not ready for solid food.
If all these things are in you and they are growing, then these things will help you to never be useless. These things will help you to never be worthless in the knowledge of our Lord Jesus Christ.