Round the cape of a sudden came the sea,
And the sun looked over the mountain's rim:
And straight was a path of gold for him,
And the need of a world of men for me.

 The  personified  sun emerges over the mountain, much as a human might awaken and peer out from sleep.  There is a sense of romance and mystery. 
 Note that three lines begin with “And”, a device known as  anaphora , creating  pace and a sense of eagerness.
Parting at Morning