Outside of God creating the physical universe for His own…

Outside of God creating the physical universe for His own glory, why did He create it. In other words what is the purpose of God. I believe the key to this understanding is referenced in Hebrews 2:10-13. That is to bring many son’s to glory.

Moreover whom He predestined, these He also called; whom He called, these He also justified; and whom He justified, these He also glorified. Rom 8:29-30 NKJV

Was that glory to expand the Royal Family of God?