1 Corinthians 13:11
When I was a child, I spoke and thought and reasoned as a child. But when I grew up, I put away childish things.
Someone who lives on milk is still an infant and doesn’t know how to do what is right. Solid food is for those who are mature, who through training have the skill to recognise the difference between right and wrong.
This [teaching and equipping] will continue until we mature in the Lord, measuring up to the full and complete standard of Christ. Then we will no longer be immature like children. We won’t be tossed and blown about by every wind of new teaching. We will not be influenced when people try to trick us with lies so clever they sound like the truth.