Galatians 2:9
James, Peter and John, those reputed to be pillars, gave me and Barnabas the right hand of fellowship when they recognized this grace given to me. They agreed that we should go to the Gentiles and they to the Jews. — the 'right hand of fellowship' ('dexias koinōnias') formally ratifies Paul's apostolic mission; the Jerusalem leaders ('stuloi' — pillars) recognize and affirm the grace that authorized his gospel.