Adoption in the Old and New Testaments

Adoption as Sons – Identity & Function in the Local Church

Week Two: Adoption in the Old and New Testaments

Key Scriptures: Romans 8:29 "For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren."*

Ephesians 1:5 "Having predestinated us unto the adoption of children by Jesus Christ to himself, according to the good pleasure of his will."*

God's Redemptive Plan Has Always Been About Family... The doctrine of adoption did not begin with the Apostle Paul. Long before the New Testament, God was revealing His desire to redeem people, establish covenant relationships, and raise a family that would represent His character throughout the earth. From Genesis to Revelation, Scripture tells one unified story—not simply the history of a nation, but the unfolding revelation of the Father's heart.

The New Testament does not introduce a new purpose; it reveals the fulfillment of God's eternal purpose through Jesus Christ.

Pictures of Adoption in the Old Testament: Although the Old Testament does not use the Greek word *huiothesia* ("adoption"), it contains powerful illustrations of God's redemptive pattern.

Moses... Moses was born a Hebrew but was received into Pharaoh's household through Pharaoh's daughter (Exodus 2:1–10). Though raised in an Egyptian palace, God preserved his true identity and later called him to become Israel's deliverer. Moses reminds us that God often places His people in unexpected environments while preparing them for His greater purpose. Identity is ultimately determined by God's calling rather than earthly circumstances.

Esther... Esther lost both of her parents and was raised by her cousin Mordecai (Esther 2:7). Through this covenant relationship, God prepared her to become queen and preserve an entire nation. Her life demonstrates that God's providence often works through faithful relationships. What appeared to be personal loss became the pathway to national deliverance.

Both Moses and Esther illustrate an important Kingdom principle: God uses covenant relationships to prepare His sons and daughters for divine assignments.

Jesus—The Firstborn Among Many Brethren The Old Testament pointed toward One who would perfectly reveal the Father's heart. Paul declares in Romans 8:29 that Jesus is "the firstborn among many brethren." This does not mean Christ was created. Rather, "firstborn" speaks of His preeminence, inheritance, and authority. Jesus became the perfect Son who restored what Adam lost. Through His death and resurrection, He opened the way for many sons and daughters to enter the Father's household. He is both the pattern and the pathway of spiritual adoption. As believers are conformed to His image, they increasingly reflect the character of the Father.

Paul's Revelation of Adoption... The Apostle Paul provides the clearest explanation of spiritual adoption in the New Testament. According to Ephesians 1:5, adoption was not an afterthought—it was established in God's eternal purpose before the foundation of the world. Through Jesus Christ, believers are welcomed into the Father's family according to His love and good pleasure. Paul consistently teaches that adoption provides believers with: A new identity in Christ. Full acceptance into God's household. The privilege of calling God "Abba, Father." An eternal inheritance shared with Christ. A calling to represent the Father's Kingdom on earth.

Adoption is therefore both a present reality and an ongoing journey of spiritual maturity.

From Illustration to Fulfillment: The Old Testament provides shadows. Jesus fulfills those shadows. The Holy Spirit applies that reality to every believer. The Father is not merely rescuing individuals from sin; He is restoring His family through His Son and forming mature sons who will faithfully represent Him in every generation. The entire Bible points toward this one magnificent purpose: God's household filled with sons and daughters who bear His image.

Discussion Questions: 1. What similarities do you see between the lives of Moses, Esther, and your own spiritual journey? 2. Why is Jesus called the "Firstborn among many brethren"? 3. How does Paul's teaching deepen your understanding of adoption? 4. What does it mean to be conformed to the image of Christ rather than merely believing in Him? 5. How does seeing Scripture as one continuous story strengthen your confidence in God's eternal purpose?

Weekly Encouragement: The story of redemption is the story of a Father building His family. Throughout every generation, God has been preparing sons and daughters to reveal His character, fulfill His purposes, and extend His Kingdom. As you continue this journey, remember that your adoption into God's family was never accidental. It was part of His eternal plan, accomplished through Jesus Christ and confirmed by the Holy Spirit, so that you might become a faithful representative of the Father's heart in the world.

This lesson intentionally bridges the Old and New Testaments, showing that adoption is not simply a theological doctrine but the unifying thread of redemptive history. It prepares participants for Week Three, where the focus turns from the biblical storyline of adoption to the personal realities of justification, reconciliation, and living as members of the Father's household.