What does it mean that God is just in relation to adoption?

The concept of adoption in a Christian theological context is deeply intertwined with God's justice. Since God is a just God, He cannot adopt individuals without first addressing their sin. In Ephesians 1:5, we see that God, in His love, predestined us for adoption through Jesus Christ. This implies that the legal basis for adoption rests on the atoning work of Christ, who secures justification for the elect. Because Christ took on the punishment for their sins, they are declared righteous before God and can be adopted as His children, thus maintaining God's integrity and justice in His relationship with His people.