'Unveiled' in the Bible

So that the words of the prophet Isaiah might come true, when he said, Lord, who has any belief in our preaching? and the arm of the Lord, to whom has it been unveiled?

But every woman who does so with her head unveiled, puts shame on her head: for it is the same as if her hair was cut off.

Be judges yourselves of the question: does it seem right for a woman to take part in prayer unveiled?

But we all, with unveiled face giving back as in a glass the glory of the Lord, are changed into the same image from glory to glory, even as from the Lord who is the Spirit.