There are profound differences between the High Heaven and the Lower Heaven. Allegorically, water in the High Heaven flows freely (55:50), while the water of the Lower Heaven needs to be pumped out (55:66).
Allegorically, the High Heaven has all kinds of fruit (55:52), while the Lower Heaven has a limited variety of fruits (55:68).
Allegorically, the pure spouses readily join their spouses in the High Heaven (55:56), while the dwellers of the Lower Heaven must go fetch their spouses (55:72).
Yet, even the Lower Heaven is an incredibly fantastic prize for those who are fortunate enough to escape Hell and end up in the Lower Heaven (3:185) - going to the Lower Heaven is a great triumph. People who depart this life before reaching their 40th birthday, and did not sufficiently develop their souls, will go to the Lower Heaven (46:15, Appendices 11 & 32). The High Heaven is reserved for those who believed, led a righteous life, and developed their souls sufficiently.
