Isaiah 2:3 (NLT2) 3 People from many nations will come and say, “Come, let us go up to the mountain of the LORD, to the house of Jacob’s God. There he will teach us his ways, and we will walk in his paths.” For the LORD’s teaching will go out from Zion; his word will go out from Jerusalem.
Christianity spread rapidly during the first century because all Christians saw themselves as responsible for disseminating the Gospel. Erwin W. Lutzer
Edythe Draper, Draper's Book of Quotations for the Christian World, (Wheaton, IL: Tyndale House Publishers, 1992), WORDsearch CROSS e-book, 181.