The parable of the workers in the vineyard confronts one of our deepest temptations: measuring God’s generosity by comparison with others. The workers hired early complain because those who worked only briefly receive the same wage. Yet the landowner has not cheated them; he has been generous. Isaiah explains why God’s action can seem mysterious: God’s thoughts are higher than ours. Saint Paul goes further, showing a heart so centered on Christ that both life and death are understood in relation to him. The liturgy therefore calls us away from spiritual accounting. Grace is not a wage earned by comparison; it is God’s free generosity.

The Catechism teaches that justification and sanctification are gifts of God’s grace, made possible by Christ’s saving work (CCC 1987–2029). Good works truly matter, but they themselves are enabled by grace. The Church rejects both presumption and despair: we cannot claim salvation as something owed to us, nor should we doubt God’s mercy when we turn sincerely toward him. The parable does not diminish the value of perseverance; rather, it exposes the resentment that can arise when we believe God’s mercy should be limited by our calculations.

Luke 15:11–32 gives another picture of God’s extravagant mercy toward the returning sinner. Romans 9:14–16 insists that divine mercy cannot be reduced to human entitlement, while Ephesians 2:8–10 holds grace and good works together. Psalm 145 praises the Lord as gracious and merciful and near to all who call upon him. The Eucharist is the great sacrament of God’s generosity: Christ gives himself not because we have earned him but because he loves us. Today we should rejoice when another person returns to God, receives a vocation, experiences healing, or receives mercy. In the vineyard of the Lord, another person’s blessing is not our loss. The Kingdom is enlarged by grace.