Nobody but an evangelist could have written this sentence. Paul knew from experience that men fortify themselves against God: they try to find impregnable positions in which they may defy Him, and live their own life. Human nature, when God is announced to speak, instinctively puts itself on its guard; and you cannot pass that guard, as Paul was well aware, with weapons furnished by the flesh. The weapons need to be divinely strong; mighty in God's sight, for God's service, with God's own might. There is an answer in this to many of the questions that are being asked at present about methods of evangelising; where the divinely powerful weapons are found, such questions give no trouble. No man who has ever had a direct and unmistakable blessing on his work as an evangelist has ever enlisted "the flesh" in God's service. No such man has ever seen, or said, that learning, eloquence, or art in the preacher; or bribes of any sort to the hearer; or approaches to the "strong holds," constructed of amusements, lectures, concerts, and so forth, were of the very slightest value. He who knows anything about the matter knows that it is a life-and-death interest which is at stake when the soul comes face to face with the claims and the mercy of God; and that the preacher who has not the hardihood to represent it as such will not be listened to, and should not be. Paul was armed with this tremendous sense of what the Gospel was--the immensity of grace in it, the awfulness of judgment; and it was this which gave him his power, and lifted him above the arts, the wisdom, and the timidity of the flesh. A man will hold his own against anything but this. He will parley with any weapon flesh can fashion or wield; this is the only one to which he surrenders.