As we have seen in our study of "Calvin the Man," after his conversion the Reformer devoted his life to the study and exposition of Scripture. He was an advocate of sola Scriptura; that is, "The whole counsel of God, concerning all things necessary for His own glory, man's salvation, faith, and life, is either expressly set down in Scripture, or by good and necessary consequence may be deduced from it" (WCF 1,6). Calvin's numerous writings - commentaries, sermons, catechisms, etc., fully attest to this fact. Scripture, to John Calvin, is "the Word of God," which comes to us from "the mouth of God" (Institutes 1:7:1,5). And being God's Word, it is all sufficient for every good work (2 Timothy 3:16,17).