'Brightness' in the Bible

Thou, O king, sawest, and behold a great image. This great image, whose brightness was excellent, stood before thee; and the form thereof was terrible.

At the same time my reason returned unto me; and for the glory of my kingdom, mine honour and brightness returned unto me; and my counsellers and my lords sought unto me; and I was established in my kingdom, and excellent majesty was added unto me.

Then the king’s face grew pale and his thoughts alarmed him, and his hip joints went slack and his knees began knocking together.

And they that be wise shall shine as the brightness of the firmament; and they that turn many to righteousness as the stars for ever and ever.