The task of the Church is to make that saving desire and purpose known. The hope is for gladness and joy. Graciousness and blessing requested are to help make known God's way on earth. It is not personal gain that is requested. It is the joy that can share joy, the giftedness that can give, the love and mercy that can be loving and merciful.
Psalm flows into the Gospel.
The glory of God is the light, the lamp is the Lamb. The imagery is striking. Take time to think about what is promised and how it is promised. This is all promise and poetry, images meant to carry a message, images not for literal translation. Or is it only God who knows the names, who knows the writing in the book of life.