'Sun' in the Bible

But Joab and Abishai went after Abner: and the sun went down when they came to the hill of Ammah, which is to the east of the road through the waste land of Geba.

And the people came to make David take food, while it was still day, but David with an oath said, May God's punishment be on me if I take a taste of bread or any other thing till the sun has gone down!

The Lord says, From those of your family I will send evil against you, and before your very eyes I will take your wives and give them to your neighbour, and he will take your wives to his bed by the light of this sun.

You did it secretly; but I will do this thing before all Israel and in the light of the sun.

It is as the light of the morning, when the sun comes up, a morning without clouds; making young grass come to life from the earth