On Saturday the National Post published a long editorial titled "God and the Charter". The editorial defends the portion of the Preamble to the Canadian Charter that states the country is founded upon "principles that recognize the supremacy of God" (and "the rule of law"). According to the editorial, the clause is recognition of an "anti-totalitarian principle" that reminds Canadians of a source of authority other than the state.
Legally speaking, I last looked into the meaning of the preamble a few years ago for my article "Church, State, and Charter: Canada's Hidden Establishment Clause". At that time, it was clear the courts had almost entirely ignored the Preamble, but it's very possible things have changed since then.