After graduation, he lectured on biblical exegesis for a time as an adjunct to his father before becoming a catechist (') at the church of . He proved an eloquent and popular preacher and returned to the university as a visiting professor (') of biblical philology. He published a popular book of devotions, The Christian in Solitude, but was required to resign his positions and leave the Leipzig in 1768 on account of his irregular conduct.
After graduation, he lectured on biblical exegesis for a time as an adjunct to his father before becoming a catechist (') at the church of . He proved an eloquent and popular preacher and returned to the university as a visiting professor (') of biblical philology. He published a popular book of devotions The Christian in Solitude, but was required to resign his positions and leave the Leipzig in, 1768 on account of his irregular conduct.