It was distinctly 'his' gospel, since the others had not yet discovered the mystery of the church within the OT writings. <ref>{{bgw| Ac 15:17 }} That the residue of men might seek after the Lord, and all the Gentiles, upon whom my name is called, saith the Lord, who doeth all these things.</ref>  <ref>{{bgw| Ge 22:18 }} And in thy seed shall all the nations of the earth be blessed; because thou hast obeyed my voice.</ref>In their studies of scripture, they were busy correlating what Jesus had done as fulfillment of OT prophecy.