'Light' in the Bible

So Saul’s servants spoke these words to David. But David said, “Is it a trivial thing in your sight to become a king’s son-in-law, seeing that I am a poor man and insignificant?”

Then Abigail came to Nabal, and he was holding a feast in his house [for the shearers], like the feast of a king. And Nabal’s mood was joyous because he was very drunk; so she told him nothing at all until the morning light.

So now, get up early in the morning with your master’s servants who have come with you, and as soon as you are up in the morning and have light, leave.”