All of you are wrong. The reason goes back to the Fallen Angels.

The unforgivable sin is to mix Immortal blood with Mortal blood. when the Fallen Angels found human women attractive and had sex with them then they produced the nephilim/giants. Part mortal and part immortal. Sort of like Dracula.

So the women were required to cover themselves to prevent the Fallen angles from getting excited and wanting to have sex with them.

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