[6] Mack emigrated from Germany in 1735, and settled in the Moravian colony in the province of Georgia in what is present-day Savannah.
[9] In 1742, Mack then also helped to initiate the first mission in Pennsylvania to the Native American trading village of Shamokin.
Located near what, today, is the city of Sunbury,[10] the village, which was also known by the Iroquois name of Otzinachson, had been established as early as 1711, and possibly even before that.
[12] Mack and his wife, Jeannette, became the first Moravian missionaries to take up residency in the Shamokin village, living there for four months beginning in 1745.
Those charges were subsequently dropped in 1749 when the Parliament of the United Kingdom acknowledged the Moravians to be an established, respected episcopal church, and encouraged their continued missionary efforts.