So much of heaven has gone from earth

So much of Heaven has gone from Earth
That there must be a Heaven
If only to enclose the Saints
To Affidavit given -

The Missionary to the Mole
Must prove there is a Sky
Location doubtless he wouldurge plead
But what excuse have I?

Too much of Proof affronts Belief
The Furtle[^a1] will not try
Unless you leave him - then return -
And he has hauled away.

[^a1: Furtle | Turtle]