Bright star! would I were steadfast as thou art—
Not in lone splendour hung aloft the night,
And watching, with eternal lids apart,
Like Nature's patient, sleepless Eremite,
The moving waters at their priestlike task
Of pure ablution round earth's human shores,
Or gazing on the new soft fallen mask
Of snow upon the mountains and the moors—
No—yet still steadfast, still unchangeable,
Pillow'd upon my fair love's ripening breast,
Keats refers back to what the star is “gazing” at. Here he uses  enjambment  to create a sense of suspense at the line break. This is cleverly done, because what follows is unexpected.