"When I get to heaven, I shall see three wonders there: the first wonder will be the many people whom I did not expect to see; the second wonder will be to miss many people whom I did expect to see there; and the third and greatest wonder will be to see myself there." - John Newton as quoted in Spurgeon's Sermon Notes
You may recognize John Newton from his great song:
Amazing Grace
and lesser know but equally great hymn:
Day of Judgment Day of Wonders
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon