Spurgeon preached 600 times before he was 20. Here are some of his ponderings on Eph 3.8:
"My Master has riches beyond the count of arithmetic, the measurement of reason, the dream of imagination, or the eloquence of words. They are unsearchable! You may look, and study, and weigh, but Jesus is a greater Saviour than you think him to be when your thoughts are at the greatest. My Lord is more ready to pardon than you to sin, more able to forgive than you to transgress. My Master is more willing to supply your wants than you are to confess them. Never tolerate low thoughts of my Lord Jesus. When you put the crown on his head, you will only crown him with silver when he deserves gold."