In order that the real church should keep itself from not dedicated people it is necessary to be exposed either to severe persecution (which undedicated can hardly endure) or to heretics of other religious communities (in order that the excuse be given to the undedicated to leave the unwanted truth and still keep the form of godliness for their conscience).

Every rejected religious community is characterized by definite kind of religious fanaticism which appears on account of the guilt because of the compromise with the sin.

As the light of the truth is more revealed in definite historical moment or geographical region, so must the error be more subtle and closer to the truth in order that sinners could have free choice. If there are no heretics, then in the real church there are many who do not like the truth but they are compelled to accept it because of the power of its arguments and because of their consciousness. Such believers, who are believers only by name, represent the greatest danger for the real God's church.

Always is more dangerous the enemy of the church who is in it, than the one who is in another religious community. Although he can have good intentions and the same form of behavior by which the real believers act, he unconsciously spreads around himself those fanatical motives which move himself to the zeal. On account of his undedication he has the damnation on himself and his deeds God cannot bless.

So, in order that the real church should be freed from such false (liberal and fanatical) believers, heretical teachings of other religious communities help it regarding it:

"For there must be factions among you in order that those who are genuine among you may be recognized." (1 Corinthians 1:19)

So, good role of rejected churches is in that that they clean and keep the real Church from fanaticism.

In the great choice of various systems of self-salvation (justification regardless of Christ, pseudo-repenting and false genders of faith) which various religious teachings give, man has the possibility to find just the system which is adequate with his personal compromise with the sin and his personal attempts to remove the developed feeling of guilt.

Instead to deny himself, the sinner in the doctrine of the rejected church tries and succeeds to find himself.

One known professor and psychiatrist stated that "...people of the certain region have the certain religion. To man's nature in Europe Catholicism and Orthodoxism are most suitable!" (Dr. V. Jerotic, the lecture in the church of St Peter, in Belgrade, 24.3.1988)

That claim is true. Man's nature is sinful and for it the religion in which it can be interwoven is the most suitable. Differently from the real one, fanatical religion is always the answer to the man's psychological needs or, in other words, it is the answer to man's burden.