Brightness represents being prosperous and happy. Alternate translation: "Your life would be prosperous and happy like the noonday" (See: [[rc://en/ta/man/translate/figs-metaphor]])
Darkness represents troubles and sadness. Alternate translation: "Though there were dark troubles and sadness" (See: [[rc://en/ta/man/translate/figs-hypo]])
The morning represents light, which represents prosperity and happiness. Alternate translation: "it would be prosperous and happy like the morning" (See: [[rc://en/ta/man/translate/figs-metaphor]])