While assembled in a parliament, dear brethren, we have read letters sent by you concerning those who are presumed among heretics or schismatics to have been baptized and who are joining the catholic Church, which is one single institution in which we are baptized and are regenerated, concerning which facts we are firmly convinced that you yourselves in doing so are ensuring the solidity of the catholic Church. Yet inasmuch as you are of the same communion with us and wished to inquire about this matter on account of a common love, we are moved to give you, and conjoin in doing so, not any recent opinion, nor one that has been only nowadays established, but, on the contrary, one which has been tried and tested with all accuracy and diligence of yore by our predecessors, and which has been observed by us. Ordaining this also now, which we have been strongly and securely holding throughout time, we declare that no one can be baptized outside of the catholic Church, there being but one baptism, and this being existent only in the catholic Church.