 In the process, he was himself transformed with personal renewal and strengthened in his faith of God and successfully brought about the spiritual transformation of the parish that built a vibrant and productive ministry of witness and outreach.In the mid-1970s, Hathaway became involved with a group of conservative evangelical clergy and lay leaders in the establishment of Trinity Episcopal School for Ministry in Ambridge, Pennsylvania.During his time as Bishop of Pittsburgh, from 1983 to 1997, he preached, taught and challenged a commitment to evangelical renewal of the congregations and a dedication by the diocese to the priority of new church planting.