A textbook example
My father's local(ish) paper - Knoxville's 19 miles away - carries Billy Grahma's "My Answer" column (on the obit page, actually). Today, the reverend gives us a textbook example of circular reasoning. Asked if the Bible is the "sole authority" or if people should "listen and try to discern if God is saying something new" he comes down hard on "the Bible is the Word of God". Why? "All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness."
Yes. He's using 2 Timothy - the Bible - to prove that the Bible is the word of God.