Thematic Bible: Who is immature

And I, brethren, was not able to speak to you, as to spiritual men, but as to those who are carnal, as to babes in Christ. I fed you with milk, not with meat; for you were not then able to bear it; indeed, not even now are you able; for you are yet carnal. For, since envy and strife and divisions are among you, are you not carnal, and do you not walk as men?

Of him we have many things to say, and difficult to be explained, if we do say them, since you are slow in understanding. For though you ought to be teachers, considering the time, yet you have need that some one teach you again what are the first elements of the oracles of God; and you have be come such as have need of milk, and not of strong food. For every one that partakes of milk is unskillful in the word of righteousness: for he is a babe.