Paul explicitly states that the sword of the Spirit is Scripture, the word of God. The Scottish pastor and writer Thomas Cuthrie said, "The Bible is an armory of heavenly weapons, a laboratory of infallible medicines, a mine of exhaustless wealth. It is a guidebook for every road, a chart for every sea, a medicine for every malady, and a balm for every wound. Rob us of our Bible and our sky has lost its sun."
-Sermons Illustrated November/December 1988