"All ministers, therefore, must be subject to this test, if they do not glorify the Lord Jesus Christ, they are not of the Holy Spirit." - from Spurgeon's Gems
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon
Further recommended reading & listening:
The Best of The Daily Spurgeon
Spurgeon: The Child is the Father Of the Man
The Forgotten Spurgeon, by Iain Murray