Tim Keller’s book on preaching is a treasure. Included is a quote from Charles Spurgeon which is also a treasure.
There seems to me to have been twice as much done in some ages in defending the Bible as in expounding it, but if the whole of our strength shall henceforth go to the exposition and spreading of it, we may leave it pretty much to defend itself. I do not know whether you see that lion – it is very distinctly before my eyes; a number of persons advance to attack him, while the host of us would defend him. Pardon me if I offer a quiet suggestion: open the door and let the lion out; he will take care of himself. Why, they are gone! You know sooner goes forth in his strength and his assailant flee. The way they meet infidelity is just read the Bible. The answer to every objection against the Bible is the Bible.
Let’s trust the Word to do its work. Let lion out!