What will the Angel of the Morning say

What will the Angel of the Morning say,
Relieving guard?
"Night, who hath passed thy way
To the Palace Yard?"
And Night will make reply,
"Only two springtime lovers sought
The King's reward."

Then will the Angel of the Morning say,
"What said the King?"
"The King said nought, but smiled
And took his ring
And gave it to the man,
And set him in his stead for one
Sweet day of spring."

Then will the Angel of the Morning say,
With grave regard,
"Pass, Night, and leave the gate
For once unbarred.
I serve the lover now;
He shall be free of all the earth
For his reward."