The real question you should be asking is where our souls came from.
	
		
	
	
		
		
			God says they are given directly by Him.  
Genesis 2:7 And the Lord God formed man of the slime of the earth: and breathed into his face the breath of life, and man became a living soul. 
We are formed naturally, as the other animals are, but He gives each of us a living soul directly.   And that is what matters.
		
		
	 
The ancient philosophers taught that man is essentially an immortal 
spiritual “soul” housed in a temporary body of flesh.
the Jewish Encyclopedia: “The belief in the immortality of the soul came to 
the Jews from contact with Greek thought and chiefly through the philosophy 
of Plato, its principal exponent, who was led to it through Orphic and Eleusinian 
mysteries in which Babylonian and Egyptian views were strangely blended”.
At The Creation of Man, the whole man—“thou”—that was composed of dust? 
Genesis 3:19 was composed of nothing but earth! 
God blew air—“the breath of life” containing oxygen—into the man’s lungs 
through his nostrils, and the man began to live! 
The verse does not say God breathed an immortal soul into the man.
22All in whose nostrils was the breath of life, 
of all that was in the dry land, died.
The same “breath of life” also pass through the nostrils of animals, as do humans.
the breath of life that is cut off when a human being or an animal drowns.
If the “breath of life” referred to an immortal soul, then animals, birds 
and even insects—gnats, fleas, mosquitoes, etc.—would all have immortal souls.
Man does not have a soul—[man  IS a “soul]   
The original Hebrew word for “soul” is nephesh. 
Bagster’s Analytical Hebrew and Chaldee Lexicon defines it as “breath,”
and “anything that breathes, an animal.” It can also refer to a “person,” 
or even “one dead, a dead body.” 
In Genesis 1:21, 24; 2:19; 9:10, 12, 15-16 and Leviticus 11:46, the same 
word nephesh is translated “creature” when referring to animals.
 
And so man is a soul. Notice that the word nephesh is translated as “dead body” 
or “the dead” in Leviticus 19:28; 21:1; 22:4; Numbers 5:2; 6:11 and 9:6-7, 10. 
The “soul,” then, is merely an air-breathing entity that is subject to death and decay.