1 Corinthians 3:2

"And I, brethren, could not speak unto you as unto spiritual." Why, in the first place, says he, though you had been perfect in spiritual things also, not even so ought you to be elated; for what you preach is not your own, nor such as yourselves have found from your own means. But now even these things ye know not as ye ought to know them, but ye are learners, and the last of all. Whether therefore the Gentile wisdom be the occasion of your high imaginations; that hath been proved to be nothing, nay, in regard to spiritual things to be even contrary unto us: or if it be on account of things spiritual, in these, too, ye come short and have your place among the hindmost. Wherefore he saith, "I could not speak unto you as unto spiritual." He said not, "I did not speak," lest the thing might seem to proceed from his grudging them somewhat; but in two ways he brings down their high spirit; first, because they knew not the things that are perfect; next, because their ignorance was owing to themselves: yea, in a third way besides these, by pointing out that "not even now are they able [to bear it]." For as to their want of ability at first, that perhaps arose from the nature of the case. In fact, however, he does not leave them even this excuse. For not through any inability on their part to receive high doctrines, doth he say they received them not, but because they were "carnal." However, in the beginning this was not so blame-worthy; but that after so long a time, they had not yet arrived at the more perfect knowledge, this was a symptom of most utter dulness. It may be observed, that he brings the same charge against the Hebrews, not however, with so much vehemence. For those, he saith, are such, partly because of tribulation: but these, because of some appetite for wickedness. Now the two things are not the same. He implies too, that in the one case he was intending rebuke, in the other rather stirring them up, when he spake these words of truth. For to these Corinthians he saith, "Neither yet now are ye able;" but unto the others "Wherefore let us cease to speak of the first principles of Christ, and press on unto perfection:" and again, "we are persuaded better things concerning you, and things which accompany salvation, though we thus speak."