Believe it or not, the kindness and mercy and blessings of this life that God pours down on the unsaved is an effective conversion tool used by the Holy Spirit. Not only did it "heap burning coals" on my unbelieving head but, going back to your Thanksgiving message, I did have to ask the question about Who or what I was thankful to? This might be one reason that Christ asks us to return evil with good, as difficult as that can be. But, I wanted to say that the Holy Spirit's toolbox is not limited to driving the unbeliever down to the depths of his depravity but also blessing those who curse Him with undeserved mercy and kindness, and asking him "what will become of your riches when you die?"