How do we know that Jesus has dominion over all things?

In Psalm 8, we read that God has made humanity to have dominion over the works of His hands, which culminates in Jesus Christ as the God-man who fulfills this role perfectly. Hebrews 2:8 affirms that all things are put in subjection under His feet. This dominion is not just theoretical; it is a sovereign authority that encompasses all creation, including spiritual realms, as stated in Ephesians 1:21. The declaration that Jesus is Lord reinforces this theme of His absolute dominion, making Him sovereign over both life and death.