3 Bible Verses about Life Being Temporary

while I am gazing not at things seen, but at things unseen; for things seen are temporal, but things unseen are eternal.

For I know, if this earthly tent of mine were struck, I have a mansion built by God, a house not made with hands, eternal in the heavens.

So I think it right, as long as I am in this "tent," to rouse you by way of reminding you, since I know that the time for me to strike tent comes swiftly on, even as our Lord Jesus Christ pointed out to me.