The Gates of Heaven

The gates of Heaven are double wide
Elysium's walls are fortified
to enter three gates you must traverse
the first of which is pearl invert
the second gate of course is horn
and there from lies you shall be shorn
your wool then floats through final gate:
Past two ivory tusks continue straight
your truths will now be remonstrate
washed clean of thought your soul becomes
woven battered torn and spun
ambrosia from which a meringue is whipped up
with which the angels fill their cups