3 Bible Verses about Life Being Temporary

while we look not at the things which are seen, but at the things which are not seen; for the things which are seen are but for a time; but the things which are not seen are ever lasting.

For we know that, if our earthly tenthabitation be destroyed, we have a building provided by God, a house not made with hands, everlasting, in the heavens.

Yea, I think it right, as long as I am in this tabernacle, to stir you up by reminding you; knowing that I must soon put off my tabernacle, even as our Lord Jesus Christ declared to me.