Ben C. Smith wrote:Interpolation may be the easy way out (though it is not in this case one that I am taking, at least not at this time), but it seems far more plausible than the sort of schizophrenia that it seems you are suggesting.
The apparent contradictions are right there in the letter. I think it’s a natural response to suspect a contrived story when such holes in the story are apparent. Paul managed to mangle logic in several different portions of Galatians, and he managed to mangle the internal logic in the passages we are discussing.
However, I think Paul did a very clever job of combining at least 3 layers of complexity in these passages of Galatians.
First, in verses 11-24, on a surface level, Paul reviewed his back-story for the congregation, apparently including information he had previously related to them on his initial evangelizing visit (“For you have heard about …” 1:13-19), along with some apparently new information (“Now in what I write to you …” 1:20 – 2:14).
I think one must consider that Paul’s initial evangelizing visit, including his own back-story, was very likely and to a significant extent in a spiritual context and with scriptural typologies,
and not logic based.
Here’s how Paul described it to the Corinthians and the Thessalonians ---
My speech and my proclamation were not with persuasive words of wisdom, but with a demonstration of the spirit and power, so that your faith might not be on man's wisdom but on God's power." (1 Corinthians 2:4-5).
"The signs of an apostle were performed among you in all endurance, in signs and wonders and miracles." (2 Corinthians 12:12).
"For our gospel did not come to you in word only, but also in power, and in the holy spirit, and with much assurance." (1 Thessalonians 1:5).
Secondly, it sure seems like Paul used chapter 12 of Numbers, and with little doubt he used chapter 1 of Jeremiah, to construct his back-story and to construct the passages in at least Galatians 1:11-17.
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And third, last but most certainly not least, to very heart of Galatians. Almost the entire letter is devoted to Paul building and presenting his case against the circumcisers. These passages are no exception. Like a clever lawyer, Paul managed to make significant points and to lay groundwork for his case, with subtlety, without always being completely explicit. Examples ---
For I make known to you, brothers, the gospel having been preached by me, that it is not according to man. For I neither received it from man, nor was I taught it, but by a revelation of Jesus Christ. (Gal 1:11-12)
But when God … was pleased to reveal His Son in me so that I might preach Him among the Gentiles. (Gal 1:15-16)
Translation: Paul is making a point to the congregation that they don’t need to get circumcised because of the redemption provided by Jesus (Gal 3:13), becasue, through Paul, this comes
directly from God for the benefit of the Gentiles --- as opposed to “those who are disturbing you” (Gal 5:12) who are
merely men who will “pay the penalty” (Gal 5:10).
For you have heard of my former way of life in Judaism, that beyond exceeding measure I was persecuting the church of God and was destroying it. And I was advancing in Judaism beyond many contemporaries among my people, being more abundantly zealous of the traditions of my fathers. (Gal 1:13-14)
Translation: Paul is telling his congregation that as a devout Jew, he thought it was a crazy idea too when he first heard about it, that he even harassed those who believed that way. But he was wrong then, just as those who are harassing his congregation are wrong now.