The original lie of Satan - He brings doubt to the truth of God and incites rebellion against Him. Contrary to the word of God - He says to Eve; God is not telling you the truth, you decide what is right and surely you will not die.
Jehovahs' Witness - believe The Watchtower over The Bible
Mormons - believe Joseph Smith over the Bible
Muslims - believe the Quaran over The Bible
Catholics believe the Catechism over The Bible
Christians believe they are saved but don't live by the Bible.
All others believe in themselves and what others say.
Now the Holy Spirit tells us clearly that in the last times some will turn away from the true faith; they will follow deceptive spirits and teachings that come from demons. These people are hypocrites and liars, and their consciences are dead. 1 Timothy 4:1,2
And the Lord God commanded the man, saying, "You may surely eat of every tree of the garden, but of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die." Genesis 2:16,17
For if you live according to the flesh you will die, but if by the Spirit you put to death the deeds of the body, you will live. For all who are led by the Spirit of God are sons of God. Roman 8:13,14
But if Christ is in you, although the body is dead because of sin, the Spirit is life because of righteousness. Romans 8:10