O God, who in thy providence didst choose thy servant David to be the Apostle to the Welsh people, that he might cause the light of the Gospel to shine in the world: Grant us so to walk in that light, that we may come at last to the light of everlasting life; through Jesus Christ our Lord, who liveth and reigneth with thee in the unity of the Holy Ghost, ever one God, world without end. Amen.
Or this:
Almighty God, who called thy servant David to be a faithful and wise steward of thy mysteries for the people of Wales: Mercifully grant that, following his purity of life and zeal for the gospel of Christ, we may with him receive our heavenly reward; through Jesus Christ our Lord, who livest and reignest with thee and the Holy Ghost, one God, world without end. Amen.