"But have you not heard, hath it not long been spoken in your ears, that God, in his infinite mercy, has devised a way whereby, without any infringement upon his honor, he can have mercy upon you, the guilty and the undeserving? To you I speak; and my voice is unto you, O sons of men; Jesus Christ, very God of very God, hath descended from heaven, and was made in the likeness of sinful flesh. Begotten of the Holy Ghost, he was born of the Virgin Mary; he lived in this world a life of exemplary holiness, and of the deepest suffering, till at last he gave himself up to die for our sins, 'the just for the unjust, to bring us to God.' And now the plan of salvation is simply declared unto you—'Whosoever believeth in the Lord Jesus Christ shall be saved.'" - from Spurgeon's sermon Compel Them to Come It
Further recommended reading & listening:
The Best of The Daily Spurgeon
The Forgotten Spurgeon, by Iain Murray
A Defense of Calvinism - by Charles Spurgeon