Complex sentence: Barzakh is mentioned only three times in the Qur'an, and just once specifically as the barrier between the corporeal and ethereal, as a place in which, after death, the spirit is separate from the body, freed to contemplate the wrongdoings of its former life.
Split into simpler sentences: Barzakh is mentioned only three times in the Qur'an, and just once specifically as the barrier between the corporeal and ethereal. A place in which, after death, the spirit is separate from the body, freed to contemplate the wrongdoings of its former life.