Adoption is Through Christ
Source: TTT
John 1:12
But to all who did receive Him, to those who believed in His name, He gave the right to become children of God—
Galatians 4:4, 5
But when the time had fully come, God sent His Son, born of a woman, born under the law, / to redeem those under the law, that we might receive our adoption as sons.
Ephesians 1:5
He predestined us for adoption as His sons through Jesus Christ, according to the good pleasure of His will,
Hebrews 2:10, 13
In bringing many sons to glory, it was fitting for God, for whom and through whom all things exist, to make the author of their salvation perfect through suffering. / And again: “I will put My trust in Him.” And once again: “Here am I, and the children God has given Me.”