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; Men's
hearts failing them for fear, and for looking after those things which
are coming on the earth: for the powers of heaven shall be shaken. And then shall they see the Son of man coming in a cloud with power and great glory.
And when these things begin to come to pass, then look up, and lift up your heads; for your redemption draweth nigh. Luke 21:25-28 (KJV)