Alternatives to the Bible

Those who put their hope in the bible as the sole revelation of God to man and believe that it "thoroughly furnishes us unto every good work" (2 Tim. 3:16-17), have a firm anchor for the soul (Heb. 6:19). Consider the following two popular alternatives.

There are multiple truths. This is the most predominant view in denominationalism, stating that it does not matter what you believe, just as long as you sincerely "accept Christ." Accordingly, if several people agree on something, they may form a denomination and serve God through it. Those who strive to find the one truth are ridiculed as being closed minded and bigoted. Yet it was Jesus who said: "Ye shall know the truth, and the truth shall make you free" (Jn. 8:32). This statement makes no sense if God allows any group to declare whatever it wants to be the truth. 

The truth is still being revealed. We see the fruits of this alternative to God's written word in the legions of false teachers who all contradict each other. If, in fact, the bible is not sufficient because new truth is being revealed, how can we tell which teacher is of God and which is practicing the deception of the devil (2 Thes. 2:9-12)? Without the bible, there is no anchor!

It is interesting that most of the groups that teach these two doctrines also state that they believe the bible. How, then, do they explain verses such as: Jn. 20:30-31; 1 Cor. 14:37, Eph. 3:3-4, 2 Tim. 3:16-17, Heb. 2:1-4, 1 Pet. 4:11, 2 Pet. 1:3, 2 Jn. 9, Jude 3, and Rev. 22:18-19?