God.

In God there's nothing, but 'tis known to be
Even God Himself, in perfect entity.

God, as the learned Damascene doth write,
A sea of substance is, indefinite.

God is more here than in another place,
Not by His essence, but commerce of grace.

God is not only said to be
An Ens, but Supraentity.

God is above the sphere of our esteem,
And is the best known, not defining Him.

God, as He is most holy known,
So He is said to be most one.