When there was an urgent need for a teacher at the mission school at Mbuyukenda, missionary Ernst Liebau, Martin Ostwald's successor, [21] asked Yakobo Ng´ombe to teach. Yakobo agreed and simultaneously received methodology lessons at the government school in town and later pursued subject-specific further education in Kisarawe near Dar es Salaam. Soon the gifted young man also led devotions and services in Tanga and Digoland.
Kulipotokea uhitaji wa lazima kwa ajili ya mwalimu kwa shule ya missioni hapo Mbuyukenda. Ernst Liebau, mmissionari aliyemfuata Martin Ostwald, [21] alimwomba Yakobo Ng'ombe afundishe. Yakobo alikubali na wakati huo huo alipata mbinu za masomo katika shule ya serikali mjini na baadaye aliendelea kupata masomo halisi kwa kupata elimu ya ziada katika shule ya serlikali Kisarawe karibu na Dar-es-Salaam.