I have no name;
I am but two days old.
What shall I call thee?
I happy am,
Joy is my name.
Sweet joy befall thee!Pretty joy!
Sweet joy, but two days old.
Sweet Joy I call thee:
Thou dost smile,
I sing the while;
Sweet joy befall thee.
This is a very simple and loving poem, and there is really not a whole lot that needs to be said about it. It is an expression of a mother’s joy as she beholds her newborn infant. There is one bit of symbolism that is worth pointing out, though, and that has to do with Blake’s illustration.
In the illustration, the mother and child are resting within the blossom of a flower as an angel attends them. I see the blossoming flower as the loss of virginity, so it appears to me that the young woman was blessed with a child upon offering up her virginity. It is also possible that the infant is the baby Jesus. One could certainly interpret the symbolic combination of flower, mother, infant, and angel to be representative of the Immaculate Conception.
There isn’t anything else I have to say about this poem, but if you have other thoughts or interpretations, please feel free to share them.
Stuff Jeff Reads 
That is such a beautiful illustration, isn’t it? I also think the poem is very precious.
I agree! Blake was one of those amazing individuals who was gifted who was both a brilliant poet and an incredible visual artist.