Principles and promises are spiritual. In the realm of tangible things we find transition. Change is constantly at work. Change affects all. Moth and rust consumes all.
Tangible things don t last.
However, spiritual truths last forever, for they were true from the beginning and always will be true. True words are enduring spirits. It cannot be refuted. It is not subject to changes in the tangible world precisely because it exists outside the tangible. It is spirit, this simple maxim of law, and and it is true self-evidently so.