Analysis of Lullaby

Beloved, may your sleep be sound
That have found it where you fed.
What were all the world's alarms
To mighty paris when he found
Sleep upon a golden bed
That first dawn in Helen's arms?

Sleep, beloved, such a sleep
As did that wild Tristram know
When, the potion's work being done,
Roe could run or doe could leap
Under oak and beechen bough,
Roe could leap or doe could run;

Such a sleep and sound as fell
Upon Eurotas' grassy bank
When the holy bird, that there
Accomplished his predestined will,
From the limbs of Leda sank
But not from her protecting care.