In Matthew 7, Jesus said "Beware of false prophets, which come to you in sheep's clothing, but inwardly they are ravening wolves.
16Ye shall know them by their fruits. Do men gather grapes of thorns, or figs of thistles?
17Even so every good tree bringeth forth good fruit; but a corrupt tree bringeth forth evil fruit.
18A good tree cannot bring forth evil fruit, neither
can a corrupt tree bring forth good fruit.
19Every tree that bringeth not forth good fruit is hewn down, and cast into the fire.
20Wherefore by their fruits ye shall know them."
How can we beware of false prophets, know that they are ravening wolves, or judge their fruits unless we judge their teachings, their prophecies and their actions?
Actually, we can and we're commanded to:
Galatians 1:8 But even if we, or an angel from heaven, should preach to you a gospel contrary to what we have preached to you, he is to be accursed!
2 Thessalonians 3:6 Now we command you, brethren, in the name of our Lord Jesus Christ, that you keep away from every brother who leads an unruly life and not according to the tradition which you received from us.
2 Thessalonians 3:14 If anyone does not obey our instruction in this letter, take special note of that person and do not associate with him, so that he will be put to shame.
Titus 3:10 Reject a factious man after a first and second warning,
2 John 1:10 If anyone comes to you and does not bring this teaching, do not receive him into your house, and do not give him a greeting;
Romans 16:17 Now I urge you, brethren, keep your eye on those who cause dissensions and hindrances contrary to the teaching which you learned, and turn away from them.
No.
Which book?
First of all, there are many, many, who haven't.
Second, so what? Why are we to abandon our Biblical responsibility to judge teachers and their teachings just because somebody else is teaching heresies, too. If somebody else is doing it, that doesn't let Hinn off the hook. It just means that we need to address those other heresies, too.
So then, you're cool with Mormonism, too?