My husband bought me a kindle and the first book i bought was AW Tozer's The Pursuit of God. (It was 89 cents. How could I go wrong?) I am just in the introduction and already I love it. Here are two quotes.
There may be a right opinion of God without either love or one right temper toward him. Satan is proof of this.
For it is not mere words that nourish the soul, but God Himself, unless and until the hearers find God in personal experience they are not the better for having heard the truth. The Bible is not an end in itself, but a means to bring men to an intimate and satisfying knowledge of God, that they may enter into Him, that they may delight in HIs Presence, may taste and know the inner sweetness of the very God Himself in the core and center of their hearts.
I think the above quote is key. I could defend the Gospel all day long with facts. I could educate myself in an effort to convince another person of the truth; however, you can not change a person's heart with the cold hard facts. When we Experience God and others see that, then we are a better witness than a library full of books. In fact it isn't even about defending the truth or 'convincing' someone (as if that were possible.) It is about our personal relationship with God.
I received the most amazing compliment the other day. I was back in a doctor's office and the receptionist said, "I was so glad to see you back in here. Well..I am not glad you are here for you but I am glad for me!" Wow- that felt really really good because on most days I feel less than worthy. So it was a whisper from God that He is doing a good work in me.