The Argument from Sufficient Reason

The most influential form of the cosmological argument in modern times arose from Gottfried Wilhelm Leibniz (1646-1716), the German rationalist. The proof (Leibniz, 32-39) is stated:

1) The entire (observed) world is changing.
2) Whatever is changing lacks within itself the reason for its own existence.
3) There is a sufficient reason for everything, either in itself or else beyond itself.
4) Therefore, there must be a cause beyond this world for its existence.
5) This cause is either its own sufficient reason or else it has a cause beyond it.
6) There cannot be an infinite regress of sufficient reasons, for the failure to reach an explanation is not an explanation; but there must be an explanation.
7) Therefore, there must be a First Cause of the world that has no reason beyond it but is its own sufficient reason. The sufficient reason is in itself and not beyond itself.
https://www.youtube.com/watch?v=0218GkAGbnU

Hebrews 1:2

but in these last days he has spoken to us by his Son, whom he appointed heir of all things, and through whom also he made the universe.