As the sparks fly upwards

Lord, grant us wills to trust Thee with such aim
     Of hope and passionate craving of desire
     That we may mount aspiring, and aspire
Still while we mount; rejoicing in Thy Name,
Yesterday, this day, day by day the Same:
     So sparks fly upward scaling heaven by fire,
     Still mount and still attain not, yet draw nigher,
While they have being, to their fountain flame.
To saints who mount, the bottomless abyss
     Is as mere nothing, they have set their face
     Onward and upward toward that blessed place
     Where man rejoices with his God, and soul
With soul, in the unutterable kiss
     Of peace for every victor at the goal.

Christina Georgina Rossetti, before 1893