To call George Whitefield the greatest Christian since the Apostle Paul would hardly be hyperbole. Here is what he says about street preaching:
"Let the love of Jesus constrain you to go out into the highways and hedges to compel poor sinners to come in. Some may say, 'This is not proceeding with a zeal according to knowledge;' but I am persuaded ... the Gospel must be propagated in the same manner as it was first established, by itinerant preaching. Go on, dear sir, go on and follow your glorious Master without the camp, bearing His reproach. Never fear the scourge of the tongue, or the threatenings that are daily breathed out against the Lord, and against His Christ. Suffer we must. Perhaps, we may sing in a prison, and have our feet in the stocks; but faith in Jesus turns a prison into a palace, and makes a bed of flames become a bed of feathers."