Reincarnation:   To an embodied soul desire and aversion will naturally occur.  On account of these states, karmic matter clings to the living being.  The karmic bondage leads the living being through the four states of existence.  Entering into the state of existence, the living being builds its own appropriate body.  Once embodied, he gets the senses.  Through the senses,  objects in the environment are perceived.  From perception comes desire or aversion for those objects, and from this the cycle begins again.  But the cycle ends in the case of those who will attain liberation, whereas it is unending to those who will not.     --Jain scripture      
                                                                                                                  
During recent decades, many people in the West have developed an interest in reincarnation. Feature films, several based on popular novels, such as The Reincarnation of Peter Proud, Dead Again, The Mummy, Chances Are, Cloud Atlas, contemporary books by authors such as Carol Bowman, Vicki Mackenzie, as well as popular songs, deal with reincarnation.
 Belief in reincarnation is held (with variations in details) by adherents of almost all major religions except Islam and Christianity. In addition, between 20-30% of people in western countries who may be nominal Christians also believe in reincarnation.
The word "reincarnation" derives from Latin, literally meaning, "entering the flesh again".  An alternate term is transmigration implying migration from one life (body) to another.Reincarnation refers to the belief that an aspect of every human being (or all living beings in some cultures) continues to exist after death, this aspect may be the soul or mind or consciousness or something transcendent which is reborn in an interconnected cycle of existence; the transmigration belief varies by culture, and is envisioned to be in the form of a newly born human being, or animal, or plant, or spirit, or as a being in some other non-human realm of existence. 
Skeptic Carl Sagan" asked the Dalai Lama what he would do if a fundamental tenet of his religion (reincarnation) were definitively disproved by science. The Dalai Lama answered, "If science can disprove reincarnation, Tibetan Buddhism would abandon reincarnation… but it's going to be mighty hard to disprove reincarnation."
It would be hard to disprove reincarntion for two reasons: 1) It is very difficult to prove that something does not exist, and 2) there is so many accounts of events that could be explained by the existence of something like reincarnation.

VARIOUS THEORYS   
Transmigration
Transmigration depends on karma, the idea that one’s actions in life, good and bad and morally ambiguous, when taken as a whole and weighed in the balance, will determine the nature of one’s next existence. There are typically thought to be four types of existence: the human kingdom, the animal/plant kingdom, the infernal kingdom, and the celestial kingdom. The infernal kingdom is a place of torment and punishment or cleansing, and the celestial kingdom mirrors the Christian heaven—a place of bliss and reward. The idea of karma is that, if a person lives a good life, he will go to a “higher” plane of existence and, if the sum of his acts in life is negative, he will descend to a “lower” plane.

Organic Reincarnation
The Law of Affinity acts through Karma and to govern its future existence..Actions and emotions in the current lifetime affect future incarnations depending on the nature of the particular

 

Reincarnation in the Bible

        Because reincarnation was such a universally accepted idea, no direct reference was made to it in the New Testament.  But there are several indirect references:  

 

       And the disciples asked him, saying, "Why then do the scribes say that Elijah must come first?"

       But he answered them and said, "Elijah indeed is to come and will restore all things. But I say to you that Elijah has come already, and they did not know him, but did to him whatever they wished. So also shall the Son of Man suffer at their hand."

      Then the disciples understood that he had spoken of John the Baptist." 

                                                                              (Matthew 17:10-13, see also Mark 9:9-13)

      

      Here Jesus clearly says that John the Baptist is a reincarnation of the prophet Elijah. And again:

 

      As Jesus was walking along, he saw a man who had been blind from birth.

     "Teacher," his disciples asked him, "why was this man born blind? Was it a result of his own sins or those of his parents?"
    
 "It was not because of his sins or his parents' sins," Jesus answered. "But it is the works of God that are manifested in him"                                                                   (John 9:1-3)

 

        Here it is very clear that the disciples believed in reincarnation - that the blind man may have sinned before he was born in this life.  Jesus does not renounce reincarnation here, but merely says that the blindness is the working of God. (Natural law.)  Then in the Old Testament we have a very clear reference: 

 

        The word of the LORD came to me thus:  Before I formed you in the womb I knew you.  Before you were born I dedicated you, and appointed you to be a prophet to the nations."   (Jeremiah 1:4-5)

 

        Finally, in the fifth century, the emperor proclaimed that reincarnation was not a Christian doctrine.  Why would he have done this if no Christians were believing in it, or if only a small minority of Christians were believing in it?

 

karma.  For example, a good and virtuous life may be attracted to rebirth in a body born in a family which has the same propensities as those of the reincarnating Entity In consequence, his next life will manifest these virtues and good experiences. Jain scriptures speak of it thusly: Desire and aversion occur naturally to a soul. Because of the conditioning of desire and aversion, karma clings to the soul.  After death,  this karmic bondage draws the soul into physical existence again where it builds a body based upon its karma.  Once in the body, sense organs arise.   Through the sense-organs, sense-objects are perceived.  From   perception comes desire and aversion and the cycle begins again.  This cycle ends for those who  attain liberation, whereas it is unending for those who do not. 
               - Panchastikaya 128-130
 
 

Elective Reincarnation
This is the teaching that the individual chooses the next life current lifetime in order to effectively move forward toward Divinity.. Following a rest period, we are geared to assist in preparing for another incarnation. The individual reviews the just ended life, and assesses the lessons learned.  Based upon this assessment, we choose what gender we will be, what race, who our parents will be, and the things we are going back to learn.and so forth.
 

Reincarnation as a Misperception
This is the teaching that there is no individual reincarnation - the "soul" is not eternal. At conception, one's life and "soul" memories are determined by the same method that chooses our physical bodies. This theory postulated that there is "soulical" pool of data from which the life is fabricated, much in the same way that our physical body is fabricated from the DNA pool.