Mat 24:3-8  And as he sat upon the mount of Olives, the disciples came unto him privately, saying, Tell us, when shall these things be? and what shall be the sign of thy coming, and of the end of the world?  And Jesus answered and said unto them, Take heed that no man deceive you. For many shall come in my name, saying, I am Christ; and shall deceive many. And ye shall hear of wars and rumours of wars: see that ye be not troubled: for all these things must come to pass, but the end is not yet. For nation shall rise against nation, and kingdom against kingdom: and there shall be famines, and pestilences, and earthquakes, in divers places. All these are the beginning of sorrows. 

Luk 21:25-26  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;  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. 

Luke 21:29-32  And he spake to them a parable; Behold the fig tree, and all the trees;  When they now shoot forth, ye see and know of your own selves that summer is now nigh at hand.   So likewise ye, when ye see these things come to pass, know ye that the kingdom of God is nigh at hand. Verily I say unto you, This generation shall not pass away, till all be fulfilled. 

Mark of the Beast - 666

Rev 13:16  And he causeth all, both small and great, rich and poor, free and bond, to receive a mark in their right hand, or in their foreheads: 
Rev 13:17  And that no man might buy or sell, save he that had the mark, or the name of the beast, or the number of his name. 
Rev 13:18  Here is wisdom. Let him that hath understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six.