'Sun' in the Bible

‘The sun shall be turned into darknessAnd the moon into blood,Before the great and glorious day of the Lord comes.

Now, watch! The hand of the Lord is on you, and you will be blind, [so blind that you will be] unable to see the sun for a time.” Immediately a mist and darkness fell upon him, and he groped around, seeking people to lead him by the hand.

at midday, O King, I saw on the way a light from heaven surpassing the brightness of the sun, shining all around me and those who were traveling with me.

Since neither sun nor stars appeared for many days, and no small storm kept raging about us, from then on all hope of our being saved was [growing worse and worse and] gradually abandoned.