Galatians 2:8-9

(for He who effectually worked for Peter in his apostleship to the circumcised effectually worked for me also to the Gentiles), and recognizing the grace that had been given to me, James and Cephas and John, who were reputed to be pillars, gave to me and Barnabas the right hand of fellowship, so that we might go to the Gentiles and they to the circumcised.