There is a dangerous error grown too common in the world that a man is bound to do every thing which his conscience telleth him is the will of God; and that every man must obey his conscience, as if it were the lawgiver of the world; whereas, indeed, it is not ourselves, but God, that is our lawgiver. And conscience is not appointed or authorized to make us any duty, which God hath not made us; but only to discern the law of God, and call upon us to observe it; and an erring conscience is not to be obeyed, but to be better informed, and brought to a righter performance of its office.

Richard Baxter