See on Gal 3:13. To redeem from the dominion and curse of the law. The means of redemption is not mentioned. It cannot be merely the birth of Christ of a woman and under the law. These are mentioned only as the preliminary and necessary conditions of his redeeming work. The means or method appears in Gal 3:13.
We might receive (ἀπολάβωμεν)
Not receive again or back, as Luk 15:27, for adoption was something which men did not have before Christ; but receive from the giver.
The adoption (τὴν υἱοθεσίαν)
Po. See on Rom 8:15, and comp. Rom 9:4; Eph 1:5. Not sonship, but sonship conferred.