To really explain the single human existence on earth that we live, we go to God Incarnate Himself, the Judge of all souls. Jesus shows there is no second third or any other life on earth, Jesus speaks of the blessing or the punishment we bring on ourselves if we refuse to love in acts of practical kindness, and do not repent:
Matthew 25 verses 31-46…Jesus’ words
“The Last Judgement”
“When the Son of Man comes in all His glory, escorted by all the angels, then he will take his seat on his throne of glory. All the nations will be assembled before him and he will separate men from one another as the shepherd separates sheep from goats.
He will place the sheep on his right hand and the goats on his left. then the King shall say to those on his right hand,” Come you whom my Father has blessed, take for your heritage the kingdom prepared for you since the foundation of the world. For I was hungry and you gave me food; I was a stranger and you made me welcome. I was thirsty and you gave me drink; naked and you clothed me; sick and you visited me, in prison and you came to see me.
Then the virtuous will say to him in reply, “Lord, when did we see you hungry and feed you; or thirsty and give you drink? When did we see you hungry and feed you; or thirsty and give you drink? When did we see you a stranger and make you welcome; naked and clothe you; sick or in prison and go to see you?
And the King will answer, " I tell you solemnly, in so far as you did this to one of the least of these brothers of mine, you did it to me.”
Next he will say to those on his left “Go away from me with your curse upon you, to the eternal fire prepared for the devil and his angels, for when I was hungry you never gave me food; I was thirsty and you never gave me anything to drink; I was a stranger and you never made me welcome, naked and you never clothed me, sick and in prison and you never visited me.”
Then it will be their turn to ask, “Lord, when did we see you hungry or thirsty; a stranger or naked, sick or in prison, and not come to your help?”
Then he will answer, “I tell you solemnly, in so far as you neglected to do this to one of the least of these, you neglected to do it to me.” And they will go away to eternal punishment, and the virtuous to eternal life.
The Church believes what Jesus taught us, that there is no reincarnation, and as Catholics we cannot argue with Jesus Christ the Son of God.