If you read at least the first chapter of the Bible, you will see that even in the Garden of Eden, God gave humans free will
and still the man makes his choice where he will fall - in heaven or hell
Reincarnation was coined, to absolve themselves of responsibility, as well as to monitor the person and his social status. So, this theory is very developed in India to a person who was born and lived in his caste, hoping to live in the next life is better
There are many testimonies of people who have been in heaven or in hell