That religion, or the duty which we owe to our Creator, and the manner of discharging it, can be directed only by reason and conviction, not by force or violence; and therefore all men are equally entitled to the free exercise of religion, according to the dictates of conscience; and that it is the mutual duty of all to practice Christian forbearance, love, and charity towards each other.
Source, in full
Virginia Bill of Rights, Article 16 (12 June 1776); Henry was on the committee which drafted the Virginia constitution and he supported this Bill, but it is not clear to what extent he was the author of any portion of it. This statement is also sometimes misattributed to James Madison who quoted it in his arguments for the United States Bill of Rights.