Bahá’u’lláh wrote:
“…The nature of the soul after death can never be described, nor is it meet and permissible to reveal its whole character to the eyes of men. The Prophets and Messengers of God have been sent down for the sole purpose of guiding mankind to the straight Path of Truth. The purpose underlying their revelation hath been to educate all men, that they may, at the hour of death, ascend, in the utmost purity and sanctity and with absolute detachment, to the throne of the Most High…The world beyond is as different from this world as this world is different from that of the child while still in the womb of its mother…”
“As to those that have tasted of the fruit of man’s earthly existence, which is the recognition of the one true God, exalted be His glory, their life hereafter is such as We are unable to describe. The knowledge thereof is with God, alone, the Lord of all worlds.”
‘Abdu’l-Bahá explained:
“For just as the effects and the fruitage of the uterine life are not to be found in that dark and narrow place, and only when the child is transferred to this wide earth do the benefits and uses of growth and development in that previous world become revealed—so likewise reward and punishment, heaven and hell, requital and retribution for actions done in this present life, will stand revealed in that other world beyond. And just as, if human life in the womb were limited to that uterine world, existence there would be nonsensical, irrelevant—so too if the life of this world, the deeds here done and their fruitage, did not come forth in the world beyond, the whole process would be irrational and foolish.”
“Consider how a being, in the world of the womb, was deaf of ear and blind of eye, and mute of tongue; how he was bereft of any perceptions at all. But once, out of that world of darkness, he passed into this world of light, then his eye saw, his ear heard, his tongue spoke. In the same way, once he hath hastened away from this mortal place into the Kingdom of God, then he will be born in the spirit; then the eye of his perception will open, the ear of his soul will hearken, and all the truths of which he was ignorant before will be made plain and clear.”