Who is our Husband?

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The law of the firstborn was to receive the blessings and inheritance of the father. He also inherited the rulership of the family. Adam was the firstborn of YHVH, meaning he was the first unique son of YHVH. If he had remained faithful to his Father’s commandment to not to eat of the tree of knowledge of Good and Evil, he would have inherited the rulership of the entire earth.

We find the law of the firstborn being applied in many places in scriptures. Reuben the eldest son of Jacob lost his firstborn right because he defiled his father’s bed. Simeon and Levi were disqualified because they killed the Shechemites for the revenge of their sister. This led to Judah being the firstborn of Jacob. For this, he received the blessing or the rulership of his family.

We find other places where the rights of the firstborn was passed to later child or the second child of the family. Esau sold his birthright to Jacob and Ephraim was given the birth right over his other bother Manasseh.

The first Adam had forfeited his lawful claim to the inheritance from his father YHVH, meaning Adam was disinherited. By calling the Son of YHVH the "Firstborn over all creation," Paul is acknowledging him as the heir and ruler of the world from the beginning, which Adam lost.
When Yeshua received the inheritance from his Father YHVH, he received the rulership of kingdom of Earth.

Psalms 82:6 “Arise, O G-d [i.e. the Messiah], judge the earth: for thou shalt inherit all nations”

HEBREWS 1:1 God, who at various times and in various ways spoke in time past to the fathers by the prophets, 2 has in these last days spoken to us by His Son, whom He has appointed [etheken] heir of all things, through whom also He made the worlds;

When Yeshua inherited the authority (rulership) of all the nations from YHVH he also received the inheritance of the bride, which is Israel. This makes Israel his future bride. A metaphor would be how his son had paid the debts of his father's slaves, in which they were now free from the father but now owned as servants for the son. In conclusion, the resurrected bride is now transferred from the Father to his son.