We are made children by regeneration. We are spiritually born of God and thus in this way and through Christ, we are rightly children of God. We are adopted and received as children through faith and regeneration (John 1:12-13). It was God’s purpose even before the foundation of the world that we would be welcomed into His family through Christ (Eph. 1:5). God predestined us for the grace and privilege of adoption. God elected us so that we would be His children for the glory of His holy Name and the praise of His grace. It was God’s purpose that we would be redeemed and cleansed from sin so that we would be adopted into His fold through Christ (Gal. 4:4-5). Through Christ we are made heirs of God’s promises, we are made true children of Abraham through faith and thus the Abrahamic promises have their fulfillment in the Jewish and Gentile believers in Christ (Gal. 3:29; 2 Cor. 1:20). As Christ is the rightful heir of everything (Heb. 1:2), so we who are in the Son are heirs to what the Lord Jesus is an heir. We are co-heirs with the Lord (Rom. 8:17). In and through Christ we are made the true Israel of God (Gal. 6:16). The Lord says that He is the True Vine (John 15:1-2), which was a clear picture of Israel (e.g. Hos 10:1) and that we are in Him. If Jesus is the true Israel and we are in Him, then we are the Israel of God, Jewish and Gentile believers in the Messiah, not unbelieving ethnic Jews.
The Liberties and Privileges
With our adoption into God’s family, we by amazing grace receive abundant privileges and graces, which we could have never deserved.
His name
We have God’s name upon us. The book of Revelation describes the believers as having the Father’s name upon their foreheads in contrast to those who have the mark of the Beast on their forehead (Rev. 3:12; 14:1; 22:4). To have His name upon us means that we belong to Him. We are His possessions. We are His children. He lays His claim especially upon us. We are welcomed into His family and the Lord Jesus, our precious and loving Savior, becomes our elder brother (cf. Rom. 8:29). In fact, the Father has predestined us to be like His beloved Son (Rom. 8:29). It is the Father’s desire that the Lord Jesus be an elder brother among many more who are conformed into His character and image. We will be spotless and pure just like our Elder Brother.
Our being adopted as children of God is a great demonstration of God’s love for us (1 John 3:1). That we should be loved and cared for by Him is a great privilege and a marvelous grace, instead of rightly receiving the punishment that we deserve for our sins. We were previously children of wrath (Eph. 2:3), but now we are the sons and daughters of the living God (Rom. 9:26).