"The earth is the Lord's... Psalm 24:1

We belong to the One who created us. And we are privileged to be stewards of all creation (not that we've been very good at it).

That was true originally and continues to be so for those of faith in God, through Jesus. We were purchased once more - redeemed without money and without price, by the blood of Christ.

He was the Firstborn, and we too are firstborn of all who will one day rise to enter upon the Life of the Ages, moving not back but ahead: - to be fully-committed stewards of the whole shebang.