"The Bible does teach that one day there will be again be a temple of God in Jerusalem (Ezekiel chapters 41-45). Jesus prophesied that the antichrist would desecrate the temple (Matthew 24:15), and for that to occur, there obviously would have to be a temple in Jerusalem once again. Many anticipate the birth of a red heifer because in order for a new temple to function according to the Old Testament law, a red heifer would have to be sacrificed for the water of cleansing used in the temple. So, when a red heifer is born (which is quite unusual) it might be a sign that the temple will soon be rebuilt."
Jews think when their is a Red Heifer then end of times is here. Temple will be rebuilt on the ashes.