基督教信仰是個人行為。基督教和天主教的本質差別就是基督教徒可以直接和上帝交流，不需要神父在中間指導。

Jehovah's Witnesses:

Jehovah’s witnesses asserts that they are Christians however, mainstream
Christians consider Jehovah’s witnesses as heretics for the latter
believes that Jesus Christ and God is not one and the same, a very stark
contrast from Christianity’s view of a Trinitarian God ‘” three
separate beings as one God.

Mormons :

Regarding their belief in God, the Mormons believe in a heavenly father
who has a physical body. On the other hand, Christians believe in
Trinitarian God, who has no physical body. For the Christians, they have
one god, the Trinity with Jesus as Messiah. Christians also believe in
salvation. Mormons do not believe in the Trinity or one God. But they
have three Gods  – The Father, Son and Holy Ghost. All the three are
distinct from each other in all ways.