"All Scripture is breathed out by God and profitable for teaching, for reproof, for correction, and for training in righteousness, that the man of God may be competent, equipped for every good work." 2 Timothy 3:16-17
"He must hold firm to the trustworthy Word as taught, so that he may be able to give instruction in sound doctrine and also to rebuke those who contradict it." -- Titus 1:9
"For the time is coming when people will not endure sound teaching, but having itching ears they will accumulate for themselves teachers to suit their own passions, and will turn away from listening to the truth and wander off into myths." 2 Timothy 4:3-4
Christians should hold fast to the Word of God and deal decisively with those who undermine in. "All too often, however, we are enticed by worldly substitutes. When facing hardship, we are apt to seek a friend before turning to the Psalms. When tempted to doubt God's provision, we turn to human leaders before going to the words of Jesus. When angry, we seek someone who will justify us rather than the wisdom of Proverbs. Within us all is the tendency to turn to the uninspired books of men ahead of the inspired Book of God." -- Rev. Ligon Duncan, Ph.D. and Rev. Randy Stinton, Ph.D. in the preface to the book, Recovering Biblical Manhood and Womanhood.