'Red' in the Bible

But he answered them, "When it is evening, you say, 'It will be fair weather, for the sky is red.'

In the morning, 'It will be foul weather today, for the sky is red and threatening.' Hypocrites! You know how to discern the appearance of the sky, but you can't discern the signs of the times!

This man led them out, having worked wonders and signs in Egypt, in the Red Sea, and in the wilderness for forty years.

By faith, they passed through the Red Sea as on dry land. When the Egyptians tried to do so, they were swallowed up.

Another came forth, a red horse. To him who sat on it was given power to take peace from the earth, and that they should kill one another. There was given to him a great sword.

Thus I saw the horses in the vision, and those who sat on them, having breastplates of fiery red, hyacinth blue, and sulfur yellow; and the heads of lions. Out of their mouths proceed fire, smoke, and sulfur.

Another sign was seen in heaven. Behold, a great red dragon, having seven heads and ten horns, and on his heads seven crowns.