In 1844 more permanent Christian missionaries arrived in East Africa in the form of the Lutheran minister Joseph Krapf and two companions who were working for the English Church Missionary Society. Based in Mombasa, they visited Zanzibar and over the next few years produced an excellent Kiswahili dictionary but they never did establish a church in the Islands.
Katika mwaka 1844 wamisionari wa kikiristo zaidi wa kudumu waliwasili Afrika mashariki kwa kupitia mchungaji wa kilutheri Joseph Krapf na wafuasi wawili ambao walifanya kazi kwa ajili wa Jumuia ya kimisheni ya kanisa la kiingereza (English Church Missionary Society). Wakifanyakazi, Mombasa, walitembelea Zanzibar na miaka michache mbeleni walitoa kamusi bora kabisa la Kiswahili lakini hawakuwahi kuanzisha kanisa ndani ya visiwa hivyi.