Then should they spread incorruptible seed:
What then becomes of that which they to lose,
When the acts of generation do not speed?
And though the Soul could cast spiritual seed,
Yet would She not, because She never dies;
For mortal things desire, their like to breed;
That so they may their kind immortalise.
Therefore the angels, Sons of God are named,
And marry not, nor are in marriage given;
Their spirits and ours are of one Substance framed,