I will not by myself, or any other, directly or indirectly...

I will not by myself, or any other, directly or indirectly trouble, molest or discountenance any person professing to believe in Jesus Christ for or in respect of religion. I will make no difference of persons in conferring offices, favors or rewards for or in respect of religion, but merely as they shall be found faithful and well deserving and endued with moral virtue and abilities. My aim shall be public unity and that if any person or official shall molest any person professing to believe in Jesus Christ on account of his religion I will protect the person molested and punish the offender.

An oath he wrote in 1636 for future Maryland governors

Cecil Calvert, 2nd Baron Baltimore

As quoted in: Contributions to the Ecclesiastical History of the United States of America (Harper & Brothers, 1839), p. 27. Also in: by Percy G. Skirven in "Historical Notes," Pt. I of The First Parishes Of the Province of Maryland (Genealogical Publishing, 2009), p. 8.