John Livingston, of Scotland, once spent a whole night in prayer with a company of his brethren, for God’s blessing, all of them besieging the throne; and the next day, under his sermon, five hundred souls were saved.
All the world has heard how the audience of the elder President Edwards was moved by his terrible sermon on “Sinners in the hands of an angry God;” some of them even grasping hold of the pillars of the sanctuary, from feeling that their feet were actually sliding into the pit.
But the secret of that sermon’s power is known to but few. Some Christians in the vicinity (Enfield, Mass.) had become alarmed, lest, while God was blessing other places, He should in anger pass them by; and so they met on the preceding evening, and spent the whole night in agonizing prayer
-- Foster’s Cyclopedia
Touching Incidents and Remarkable Answers to Prayer - 1893