"The two first principles and foundations of true religion, or worship of the true God in Christ, are repentance from dead works and faith toward God, before the doctrines of baptism or washing and the laying on of hands, which continue the ordinances and practises of worship; the want of which I conceive is the bane of millions of souls in England and all other nations professing to be Christian nations, who are brought by public authority to baptism and fellowship with God in ordinances of worship, before the saving work of repentance and a true turning to God."
"First, that the blood of so many hundred thousand souls of Protestants and Papists, spilt in the wars of present and former ages, for their respective consciences, is not required nor accepted by Jesus Christ the Prince of Peace...
"Sixthly, it is the will and command of God that (since the coming of his Son the Lord Jesus) a permission of the most paganish, Jewish, Turkish, or antichristian consciences and worships, be granted to all men in all nations and countries; and they are only to be fought against with that sword which is only (in soul matters) able to conquer, to wit, the sword of God's Spirit, the Word of God.
"Seventhly, the state of the Land of Israel, the kings and people thereof in peace and war, is proved figurative and ceremonial, and no pattern nor president for any kingdom or civil state in the world to follow.
"Eighthly, God requireth not a uniformity of religion to be enacted and enforced in any civil state; which enforced uniformity (sooner or later) is the greatest occasion of civil war, ravishing of conscience, persecution of Christ Jesus in his servants, and of the hypocrisy and destruction of millions of souls.
"Ninthly, in holding an enforced uniformity of religion in a civil state, we must necessarily disclaim our desires and hopes of the Jew's conversion to Christ.
"Tenthly, an enforced uniformity of religion throughout a nation or civil state, confounds the civil and religious, denies the principles of Christianity and civility, and that Jesus Christ is come in the flesh.
"Eleventhly, the permission of other consciences and worships than a state professeth only can (according to God) procure a firm and lasting peace (good assurance being taken according to the wisdom of the civil state for uniformity of civil obedience from all forts).
"Twelfthly, lastly, true civility and Christianity may both flourish in a state or kingdom, notwithstanding the permission of divers and contrary consciences, either of Jew or Gentile....
"TRUTH. I acknowledge that to molest any person, Jew or Gentile, for either professing doctrine, or practicing worship merely religious or spiritual, it is to persecute him, and such a person (whatever his doctrine or practice be, true or false) suffereth persecution for conscience."
-- Roger Williams, The Bloudy Tenent of Persecution ...
He was briefly a Baptist, and later became a Seeker.