How would you describe a color to someone who had been blind since birth?

What can you say about "blue" or "red" or "green" to someone who has no concept of color, of bright, light, or dark?

Well, you would almost have to use examples from the sense the blind person did have - touch, scent, sound, taste.

Blue is "cold" compared to a "hot" red.

Green is smooth and sweet, while yellow is sharp and pungent.

Purple has the depth of a bruise.

Orange may not rhyme with anything, but is feels like the sun on your face on a warm day.

Explaining the impossible to the unknowing describes much of the mission and message of Jesus.