The child addressed in this poem is Wordsworth's daughter, Caroline.
It Is a Beauteous Evening
It is a beauteous evening, calm and free,
The holy time is quiet as a Nun
Breathless with adoration; the broad sun
Is sinking down in its tranquility;
The gentleness of heaven broods o'er the Sea:
Listen! the mighty Being is awake,
And doth with his eternal motion make
A sound like thunder -- everlastingly.
Dear Child! dear Girl! that walkest with me here,
If thou appear untouched by solemn thought,
Thy nature is not therefore less divine:
Thou liest in Abraham's bosom all the year,
And worship'st at the Temple's inner shrine,
God being with thee when we know it not.