From his Method for Prayer…

We thank you that we have the Scriptures to search, and that in them we have eternal life, for it is they that bear witness about Christ; John 5:39 and that all Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness. 2 Timothy 3:16

That whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope; Romans 15:4 and that we have this sure prophetic word, as a lamp shining in a dark place. 2 Peter 1:19