My purpose for the discussion in the last few posts had one main point, to bring confidence in the Scripture; that it is God's Word (it does not contain it, but IS it), that by virtue of it being God inspired, it cannot mislead in any other way even in the minute or seemingly immaterial detail. For if it did, it will put into question the other parts. Of course, I am saying this because I believe the truths of Scripture are interconnected, that is of course a premise I am operating on. If this premise is not true, then of course, you can have an erroneous Scripture. I do not allow for this because I believe all of God's words are not wasted words, they all point to Christ, yes, even that obscure passage in Nahum.
So, coming back to my point that faith being so slippery and easily killed (for the devil wants that faith destroyed), and adding the fact that it is a gift of God such that you cannot create it within yourself, the BoC authors direct the reader to Scripture and the listening of it, specially at a time when a believer is doubting his future destiny.
From SD XI.
76] Moreover, the declaration, John 6:44, that no one can come to Christ except the Father draw him, is right and true. However, the Father will not do this without means, but has ordained for this purpose His Word and Sacraments as ordinary means and instruments; and it is the will neither of the Father nor of the Son that a man should not hear or should despise the preaching of His Word, and wait for the drawing of the Father without the Word and Sacraments. For the Father draws indeed by the power of His Holy Ghost, however, according to His usual order [the order decreed and instituted by Himself], by the hearing of His holy, divine Word, as with a net, by which the elect are plucked from the jaws of the devil. 77] Every poor sinner should therefore repair thereto [to holy preaching], hear it attentively, and not doubt the drawing of the Father. For the Holy Ghost will be with His Word in His power, and work by it; and that is the drawing of the Father.