Christ is Lord over all because in his human nature he has accomplished perfect obedience, has won salvation, demonstrated self sacrificing on the cross, His human body named Jesus, for us, and has been given universal dominion as a reward. As a result of his resurrection and ascension, Christ has been enthroned at the right hand of God the Father, with universal dominion:
Hebrews 1:1 God, Who at sundry times and in diverse manners spoke in time past unto the fathers by the Prophets,
1:2 Hath in these last days spoken unto us by [His] Son, whom He hath appointed heir of all things, by whom also He made the worlds;
1:3 Who being the brightness of [His] glory, and the express image of His person, and upholding all things by The Word of His power, when he had by himself purged our sins, sat down on the right hand of His Majesty on high;
1:4 Being made so much better than the angels, as he hath by inheritance obtained a more excellent name than they.
Romans 1:16 For I am not ashamed of the gospel of Christ: for it is the power of God unto salvation to every one that believeth; to the Jew first, and also to the Greek.
Crown Prince Michael in Gibraltar
The Final Overturn of The Stone / Throne and British Monarchy – Christmas Day