“AN ACT to provide for the division of Dakota into two States and to enable the people of North Dakota, South Dakota, Montana, and Washington to form constitutions and State governments and to be admitted into the Union
....
That perfect toleration of religious sentiment shall be secured and that no inhabitant of said States shall ever be molested in person or property on account of his or her mode of religious worship.”
http://leg.wa.gov/History/State/Pages/enabling.aspx
The permanent requirement for “perfect toleration of religious sentiment” was typically required by Congress for statehood.
Yes, it’s clear.
But clearly twisted by nonsense from the Courts.