Can you help me about translate poem,please?

“Sudden Heaven”

All was as it had ever been—

The worn familiar book,

The oak beyond the hawthorn seen,

The misty woodland’s look:

The starling perched upon the tree

With his long trees of straw—

When suddenly heaven blazed on me,

And suddenly I saw:

Saw all as it would ever be,

In bliss too great to tell;

For ever safe, for ever free

All bright with miracle:

Saw as in heaven the thorn arrayed,

The tree beside the door;

And I must die—but O my shade

Shall dwell there evermore.