He was a lecturer at Makumira Lutheran Theological College between 1970 and 1972 where he was also the Deputy Principal.
Dkt. Musa alibarikiwa kuwa mchungaji mwaka 1994 kisha akaenda Marekani kusoma katika Chuo Kikuu cha Kilutheri Minnesota na kupata Shahada ya Udakatari katika masuala Theolojia na Unasihi Kichungaji.