The non-Christian religions have always been a trial mark for Christ’s Church. History is impregnated with numerous conflicts between the Church and the other religions. The 2nd Vatican Council affirms the liberty of a person to adhere to a religion and the fact that this liberty has to be respected and guaranteed. Also, religions must work together to the common good and to the progress of the society. The present article underlines these features of the Council’s document and brings them up-to-date through the exemplification of concrete actions made in the favor of inter-religious dialogue.