All humanity was in Adam until God came and purchased humanity for himself. He did this through Christ in whom God put us ALL.
1 Colossians 19 says « For God was pleased to have all his fulness dwell in him, and through him to reconcile to himself all things, whether things on earth or things in heaven, by making peace through his blood shed on the cross. »
We are all In Him.
A son of the Most High