In the pages of this study, the reader has the opportunity to find out the new aspects of the issue regarding Religious Liberty due to a hermeneutical examination of the text of various national and international legal norms, which we corroborated them with the principles of the juridical doctrine, hence the personal contribution in approaching a matter that continues to be a predilect subject of the EU legislator. Among others thinks, in our study we managed to prove ≶à l'évidence≵ that from the wright to the Liberty of Religion, enacted by Edict of Milan, in the year 313 p. Chr., until to the Right of the Religious Liberty in Europe today, this kind of Liberty was not only perceived, defined and lived differently, but also it has experienced various manifestations and has been provided by different legal requirements, national and international. In the name of this Liberty - which it is based both in the "Jus divinum" and "Jus naturale" - people of different religious beliefs were in fact free to declare their religious identity and to enjoy worshiping God, even if - quite often - from the Edict of Milan until the present they had to make many sacrifices on the Altar of Freedom. [ABSTRACT FROM AUTHOR]