"AND I, brethren, could not speak unto you as unto spiritual, but as unto carnal, even as unto babes in Christ. I have fed you with milk, and not with meat: for hitherto ye were not able to bear it, neither yet now are ye able. For ye are yet carnal: for whereas there is among you envying, and strife, and divisions, are ye not carnal, and walk as men?" (1 Corinthians 3:1-3)In the latter half of the first century A.D., the Apostle Paul writes to the Corinthians for the second time (the first epistle is lost to us; 2 Corinthians actually represents Paul's third letter to Corinth) and explains that, previously, he has fed them with "milk" because they could not bear "meat". This time, he states that "neither yet now are ye able", the reason being the contentions, arguments, and divisions among them. Paul acknowledges that they have separated themselves into Christian "factions", some claiming to be followers of Paul, others of Apollos, others of Peter, and others of Christ.
Because Paul states that the saints at Corinth cannot yet bear "meat", it is safe to assume that there is probably not any doctrine contained in 1 Corinthians except that which Paul would have considered "milk". Obviously Paul was aware of other, deeper doctrines, but felt it unwise to share them with the Corinthian saints at this point.
Does Paul share the "meat" in any of his other epistles? Is the "meat" that Paul knew about even contained in the New Testament? I am not aware of anything especially significant in the rest of Paul's writings, or in the rest of the New Testament, that fits the mold for the "meat" that the Corinthians cannot yet handle.
But let me get to my point: God's works are endless, and his words never cease. The Bible by itself does not contain every single revelation that God ever gave, nor was the completion of it God's "going out of business" sign. Paul wasn't an anomaly; some men are given the same calling today, and their words carry just as much weight.
