'Sun' in the Bible

The sun will be changed to darkness and the moon to blood, before the great and glorious day of the Lord comes.

And now behold, the hand of the Lord [is] against you, and you will be blind, not seeing the sun {for a while}. And immediately mist and darkness fell over him, and he was going around looking for [people] to lead [him] by the hand.

In the middle of the day along the road, O king, I saw a light from heaven, more than the brightness of the sun, shining around me and those who were traveling with me.

But [when] neither sun nor stars appeared for many days, and [with] not a little bad weather confronting [us], finally all hope was abandoned [that] we would be saved.