What does the father’s response to the elder son signify?

The father's gentle entreaty to the elder son serves as a profound reminder of God’s desire for a relationship with His children rather than mere obedience to rules. By stating, 'Son, thou art ever with me,' the father underscores that the relationship is foundational, suggesting that the elder son had all the resources of kinship and fellowship available to him. This divine response points to the need for an intimate relationship with God, where identity and acceptance are grounded in His love, not in religious performance. The father's appeal to his son to partake in the joy over the younger brother illustrates a redemptive element of grace that seeks to restore both brothers, celebrating the truth that in God’s family, grace—and not performance—is what truly binds.