This World Made With Heh, the World to Come With Yod

With two letters the Holy One, blessed be He, created His world. This world was created with the letter heh. Just as the heh is closed on all its sides and open below, it is a hint that all the dead descend to Sheol; and its point [the small upper stroke] above is a hint that they are destined to rise; and this window that is on the side is a hint to those who repent. And the world to come was created with the letter yod: just as this [letter's] stature is bent over, so the wicked, their stature is bent over and their faces blackened in the world to come. This is what is written: "and the loftiness of man shall be bowed down, and the haughtiness of men shall be brought low, and the LORD alone shall be exalted in that day" (Isaiah 2:17).