Let my first Knowing be of thee — Morning Newspaper

Let my first Knowing be of thee
With morning's warming Light－
And my first Fearing, lest Unknowns
Engulf thee in the night－

(F.1254/J.1254)

[1] thee:: a morning newspaper.
[2] morning:: a hint on the the answer. Light:: view, concept provided in the newspaper.
[3] Fearing:: that someone took away this newspaper. Unknowns:: unknown or ignorant persons.
[4] Engulf:: to hide the newspaper as swallow it up in a gulf.