" You can know the doctrine of justification by faith and take your stand with Luther and the Reformation, and be blind inwardly. For it is not the body of truth that enlightens; it is the Spirit of truth that enlightens. If you are willing to obey the Lord Jesus He will illuminate your spirit, inwardly enlighten you, and the truth you have known will now be known spiritually and power will begin to flow up and out and you will find yourself changed, marvellously changed. In that great day of Christ's coming all that will matter is whether or not I have been inwardly illuminated. Inwardly regenerated. Inwardly purified. Do I know Jesus? "

― A.W. Tozer , God Still Speaks: Are We Listening?