O God of Mercy God of Light
O God of mercy, God of light
The hymn exemplifies Lutheran understanding of sanctification—the Christian life lived out in service to the neighbor, grounded in God's merciful nature revealed in Christ. It balances justification's foundation with the practical outworking of faith in love, central to Lutheran ethics.
History & Background
Written by Henry Hallam Tweedy in 1928, this hymn reflects the Social Gospel movement's emphasis on active Christian witness through mercy and service. It has been widely adopted in Lutheran hymnals since the mid-20th century.
Hymnal Appearances
- Evangelical Lutheran Worship — 712
- Lutheran Book of Worship — 425
- Lutheran Service Book — 852
- Lutheran Worship — 397
- The Lutheran Hymnal — 439
Bulletin Note
Written in 1928 by Henry Hallam Tweedy, a leading American hymnist, this text pairs the medieval tune ERHALT UNS HERR to express classical Lutheran ethics: justification grounds sanctification; God's mercy compels our merciful action.
Preaching Connection
This hymn crystallizes the movement from Gospel comfort to Law's ethical demand: God's mercy in Christ frees us to serve the suffering neighbor with concrete acts of justice—faith working through love.
Themes
God's mercy and compassion Christian love and service Social justice Neighbor care God's character