'Light' in the Bible

And the three sons of Zeruiah were there, Joab, and Abishai, and Asahel: and Asahel was as light of foot as a wild roe.

So shall we come upon him in some place where he shall be found, and we will light upon him as the dew falleth on the ground; and of him and of all the men that are with him we will not leave so much as one.

Then David arose, and all the people that were with him, and they passed over the Jordan: by the morning light there lacked not one of them that was not gone over the Jordan.

He shall be as the light of the morning, when the sun riseth, A morning without clouds, When the tender grass'springeth out of the earth, Through clear shining after rain.