Equally, discrimination arises against persons unable to accept the western concept of adoption, i.e. the complete transfer of a child from one family and lineage to another. (ukscblog.com)
In it, I discuss the concept of adoption from Scripture and how it helps us understand Romans 9:4. (redeeminggod.com)
Most scholars agree that Paul borrowed the concept of adoption from Greek or Roman law. (religion-online.org)