The idea that either heaven or hell exists, is cultural within the Bible.

So cultural within the Bible that it existed in other faiths, such as Hinduism and Buddhism, Jainism and even Confucianism (albeit in a rather different form) for centuries before the Biblical texts were written.

In reincarnational religions like Hinduism, Buddhism and Jainism the ultimate aim was to reach such a state of perfection as to allow one's soul to enter Nirvana - that oneness with the Creator - Brahman (for the Hindu), the extinguishing of the fires of greed, hate, etc. for the Buddhist and the freeing of the soul from the obstructiveness of karma for the Jain.

Can't remember exactly how many reincarnations Hindus believe a soul is permitted in order to achieve this - but it numbers in the thousands, at least.