Hebrews 5:12-14

CLV(i) 12 For when also, because of the time, you ought to be teachers, you have need again of one to teach you what are the rudimentary elements of the oracles of God, and you have come to have need of milk, and not of solid nourishment." 13 For everyone who is partaking of milk is untried in the word of righteousness, for he is a minor." 14 Now solid nourishment is for the mature, who, because of habit, have faculties exercised for discriminating between the ideal and the evil."