Muhlenberg was sent by the Lutheran bishops in Germany, and he always insisted on strict conformity to Lutheran dogma. Muhlenberg's view of church unity was in direct opposition to Nicolaus Ludwig Zinzendorf's Moravian approach, with its goal of uniting various Pennsylvania German religious groups under a less rigid "Congregation of God in the Spirit". The differences between the two approaches led to permanent impasse between Lutherans and Moravians, especially after a December 1742 meeting in Philadelphia. The Moravians settled Bethlehem and nearby areas and established schools for Native Americans.