One key feature of the Surya Upanishad (often available in PDF form for spiritual study) is its assertion of the
The Upanishad opens with a profound declaration: all beings arise from the Sun, are sustained by the Sun, and ultimately merge back into the Sun. It identifies Surya with the Hindu Trinity—Brahma, Vishnu, and Shiva—and asserts that the Sun is the "Atman" (soul) of the world. Key themes in the text include: surya upanishad pdf
While downloading the full is recommended for in-depth study, here is a summary of its key sections. One key feature of the Surya Upanishad (often