One philosopher said the world isn't an illusion — it's literally God's body

Where the earlier philosopher Shankara held that the everyday world is ultimately unreal, an illusion (maya) laid over one undivided reality, the 11th-12th century thinker Ramanuja argued that individual souls and matter are fully real, existing as inseparable 'modes' of a personal God, the way a body is inseparable from the soul that animates it. His Vishishtadvaita, 'qualified non-dualism,' made devotion to a personal deity philosophically central rather than a lesser path for the unlearned.

— Ramanuja, Sri Bhashya (commentary on the Brahma Sutras) — c. 11th-12th century CE