In a similar way, strong faith works powerfully in the congregation through the majority of its members. It is a fruit of the spirit developed by carefully ascertaining God’s will through study of the Bible and by following the leading of the spirit. (Gal. 5:22) Through the upheavals of two world wars, through the furnace of burning hatred and opposition to God’s kingdom and its proclamation, through indifference, ridicule and persecution, men of faith have led and inspired the congregation to fulfill its commissions.

Gifts of healings and similar miraculous works are not necessary today. God’s change from the ancient Jewish to the Christian congregation is verified by history, while love and activity on the part of the Christian congregation, as well as many fulfillments of prophecy, stand as modern identifying signs, proof that God’s favor is upon it. The worldwide expansion of the Kingdom preaching is also a powerful sign.​—1 Cor. 13:10-13; Matt. 24:14.