In most of these nations, the Gilead missionaries have been in the vanguard of the evangelizing work. What are three basic factors that have made both the early and the modern Christian missionary work effective?
वे तीन आधारभूत तत्त्व क्या हैं जिन से प्रारंभिक और आधुनिक मिशनरी कार्य, दोनों, इतने प्रभावकारी रहे हैं?