Immensity

I illuminate myself with immensity.

Immensity fills me with light.

I'm illuminated by immensity.

When you go to the beach you see the immensity of the universe contained in the ocean.

I love the immensity of the Sahara Desert.

Crossing the Sahara, she felt so small before the golden immensity of the desert.

Thou, whose exterior semblance doth belie / Thy soul's immensity; […]