After three years— That is, from his conversion. The Apostle seems to have used great caution, to prevent any suspicion that he had gone even to St. Peter for the sake of instruction; for he says, first, that he went only to see him, and then that he abode with him; but says not a word of having been taught by him.
Related Commentaries of Galatians 1:18
Galatians 1:18
18 Then after three years I went upb to Jerusalem to see Peter, and abode with him fifteen days.