Answer: We are still looking and we can’t find anything!
Coming back as a cow or other barnyard animal does not sound very appealing. The immortal soul concept can really mess people up into believing that their soul will somehow be “reborn”, yet no scriptural evidence supports this idea. The deceptive concept of people coming back in the future as an animal or some new person cannot be found in the Bible.
Some believe that we will pass into a new domain outside of Earth. These ideas adopted from ancient customs filtered though Greek philosophers and poets found a voice in one of the most famous and often quoted thinker of the ancient world, Plato. Plato fully developed the flawed and deceptive concept of the immortal soul and rebirth of the soul.
Only God the Father and Jesus Christ can bring the dead back to life and grant them eternal life. John 10:27-30 (ESV), "My sheep hear my voice, and I know them, and they follow me. I give them eternal life, and they will never perish, and no one will snatch them out of my hand. My Father, who has given them to me, is greater than all, and no one is able to snatch them out of the Father’s hand."
If reincarnation were biblical, we would have seen it early on in the Bible. What we do find clearly is that man returns to the dust from which he was made. The cycle of death and rebirth are not evident in these early scriptures. Genesis 3:19, "In the sweat of your face you shall eat bread Till you return to the ground, For out of it you were taken; For dust you are, And to dust you shall return."