'Sun' in the Bible

Now when the sun was setting, all they that had any sick with divers diseases brought them unto him; and he laid his hands on every one of them, and healed them.

so he said to the vineyard-keeper, ‘For three years I have come looking for fruit on this fig tree and have found none. Cut it down! Why does it even use up the ground [depleting the soil and blocking the sunlight]?’

And there shall be signs in the sun, and in the moon, and in the stars; and upon the earth distress of nations, with perplexity; the sea and the waves roaring;

And the sun was darkened, and the veil of the temple was rent in the midst.