How was our adoption secured according to the Bible?

The Bible teaches that our adoption was secured through the work of Jesus Christ. Galatians 4:4-5 states that when the fullness of time had come, God sent His Son, made of a woman, to redeem those under the law and enable us to receive adoption as sons. This fulfillment of God's promise illustrates the necessity of Christ's atoning work as He pays the adoption price, allowing us to be reconciled to God. Our adoption is thus not based on our works but is wholly a gracious act of God that allows us to partake in His heavenly inheritance and family.