What is the test for statutory interpretation of the words in the context of a statute?

With this said, the words of a statute are not the only consideration in statutory interpretation. As McLachlin C.J.C. explained in Canada Trustco Mortgage Co v. Canada, 2005 SCC 54, at para. 10, [2005] 2 S.C.R. 601: When the words of a provision are precise and unequivocal, the ordinary meaning of the words play a dominant role in the interpretive process. On the other hand, where the words can support more than one reasonable meaning, the ordinary meaning of the words plays a lesser role. The relative effects of ordinary meaning, context and purpose on the interpretive process may vary, but in all cases the court must seek to read the provisions of an Act as a harmonious whole.