I love this poem for its beautiful natural metaphors of heaven, and for the closing question of how human beings will be fit for such perfection.

“Heaven” has different Signs—to me—
Sometimes, I think that Noon
Is but a symbol of the Place—
And when again, at Dawn,

A mighty look runs round the World
And settles in the Hills—
An Awe if it should be like that
Upon the Ignorance steals—

The Orchard, when the Sun is on—
The Triumph of the Birds
When they together Victory make—
Some Carnivals of Clouds—

The Rapture of a finished Day—
Returning to the West—
All these—remind us of the place
That Men call “paradise”—

Itself be fairer—we suppose—
But how Ourself, shall be
Adorned, for a Superior Grace—
Not yet, our eyes can see—

Source: Poemhunter.com