What is true is always true and never becomes false. So if I say that I love you it can either be the truth or a lie, it can not be both. If the statement is really true then I love you now and always will, but if the statement can change due to time or circumstances and become false, then it really was never true in the first place. This is the way that it is for anything that is eternal, temporal things can change back and forth between true or false, but the eternal always remains the same. Spirit is eternal, and the spirit of truth is beautiful, and that truth never changes. 🙂