One of the fundamental aspects for mankind is the religious experience. The religious dimension is not something added to the man but it is an inherent gift. This is why it must never be constrained by the social-cultural factors. The dialogue shows that the Council Fathers, being aware of the religious freedom’s defection problems, voted the Declaration about religious freedom Dignitatis humanae, which is a major contribution to a greater cohabitation of men, not only as a response to the signs of our time, but also as an explaining of the Evangels principles. The Declaration Dignitatis humanae responds to the contemporary challenges: religious freedom, tolerance, the Church-State report, practical atheism, Evangels and the modern man.