Evangelism When the Church Grew the Most

St. John Chrysostom preached in Antioch and Constantinople at the end of the 4th Century, when Churches were crowded, yet many hadn't been baptized and there were large numbers of pagans. In this time that marked the greatest growth of Christianity, here is how St. John preached evangelism:

Let us show forth then a new kind of life. Let us make earth, heaven; let us hereby show the Greeks, of how great blessings they are deprived. For when they behold in us good conversation, they will look upon the very face of the kingdom of Heaven. Yea, when they see us gentle, pure from wrath, from evil desire, from envy, from covetousness, rightly fulfilling all our other duties, they will say, "If the Christians are become angels here, what will they be after their departure hence? if where they are strangers they shine so bright, how great will they become when they shall have won their native land!" Thus they too will be reformed, and the word of godliness "will have free course, not less than in the apostles' times. For if they, being twelve, converted entire cities and countries; were we all to become teachers by our careful conduct, imagine how high our cause will be exalted. (Homily XLII)