Perhaps Israel would be the first non-Baha'i state to adopt the Baha'i Faith as it's State Religion.

In answer to those who raise objections to this vision of a worldwide commonwealth inspired by a Divine Revelation, fearing for the freedom of minority groups or of the individual under such a system, we can explain the Bahá’í principle of upholding the rights of minorities and fostering their interests. We can also point to the fact that no person is ever compelled to accept the Faith of Bahá’u’lláh and moreover, unlike the situation in certain other religions, each person has complete freedom to withdraw from the Faith if he decides that he no longer believes in its Founder or accepts His Teachings. In light of these facts alone it is evident that the growth of the Bahá’í communities to the size where a non-Bahá’í state would adopt the Faith as the State Religion, let alone to the point at which the State would accept the Law of God as its own law and the National House of Justice as its legislature, must be a supremely voluntary and democratic process.

https://bahai-library.com/uhj_messages_1986_2001