Paul and Barnabas had been faithfully serving the Lord in the church in the city of Antioch, when the Holy Spirit selected them to take the gospel to other places where people had never heard of Jesus before.  Their trip had lasted about two years; they traveled more than 700 miles by land and more than 500 miles by sea.  

But then some men came to Antioch and were spreading an extremely dangerous false teaching — false teaching regarding the salvation of Gentiles.