What is the meaning of The deadman ariseth and singeth a hymn to the sun?

The phrase "the deadman ariseth and singeth a hymn to the sun" is a metaphor for the power of the sun and its ability to bring life and hope to the world. It is suggesting that even when the world seems dead, the sun will still rise and bring with it the promise of new life and a new beginning. The metaphor also suggests the power of music and the ability of song to bring joy and peace. The phrase suggests that even in the darkest moments, the sun will still rise and bring with it the promise of a new day and a new beginning with all its possibilities.