Obama is 51 on this Saturday 4th August 2012.

  51 the number for transformation.(change)

  'August 4 is the 216th day of the year (*217*th in leap years =2012) 
 in the Gregorian calendar. There are 149 days remaining until the end 
 of the year.' .
 ..
 Exodus1 being the 51st Chapter King James Bible.It is directly related 
 to the rapture.

 The number 51 is a product of (17 x 3).
 153 fishes in the net (51x3)(17x9)
 'Simon Peter went up, and drew the net to land full of great fishes, 
 an hundred and fifty and three: and for all there were so many, yet 
 was not the net broken' Jn21:11

   'Behold, I shew you a mystery; We shall not all sleep, but we shall 
 all be changed' ( 1 Cr 15 :51) 17 words.
  The word 'Trumpets' occurs 51 times the last in Rev.8:6 so does 
 'risen and tarry
 51 translators for the KJB in 3 groups = 17 x 3
 But of the times and the seasons, brethren, ye have no need that I 
 write unto you.' ( 1Th 5:1) 17 words.

  This Sat 4th August is the same day of the 2nd Temple destruction in 
 70 A.D. was.
  'http://en.wikipedia.org/wiki/Destruction_of_the_Second_Temple
 See More
 Siege of Jerusalem (70) - Wikipedia, the free encyclopedia
 en.wikipedia.org
 The Siege of Jerusalem in the year 70 was the decisive event of the 
 First Jewish-Roman War. The Roman army, led by the future Emperor 
 Titus, with Tiberius Julius Alexander as his second-in-command, 
 besieged and conquered the city of Jerusalem, which had been occupied 
 by its Jewish defenders in 66.
 http://en.wikipedia.org/wiki/Destruction_of_the_Second_Temple