In 1735, slavery had been outlawed in the young Georgia colony. In 1749, George Whitefield campaigned for its legalization, claiming that the territory would never be prosperous unless farms were able to use slave labor.[24][page needed] He began his fourth visit to America in 1751 advocating slavery, viewing its re-legalization in Georgia as necessary to make his plantation profitable.[25] Partly through his campaigns and written pleas to the Georgia Trustees, it was re-legalized in 1751. Whitefield purchased slaves, who then worked at his Bethesda Orphanage. To help raise money for the orphanage, he also employed slaves at Providence Plantation. Whitefield was known to treat his slaves well; they were reputed to be devoted to him, and he was critical of the abuse of slaves by other owners.[26][page needed] When Whitefield died, he bequeathed his slaves to the Countess of Huntingdon.[27][page needed] His attitude towards slavery is expressed in a letter to Mr B. written from Bristol 22 March 1751: