Gave thee such a tender voice
Making all the vales rejoice?
Little Lamb, who made thee?
Dost thou know who made thee?
Little Lamb, I'll tell thee
Little Lamb, I'll tell thee:
He is called by thy name
For he calls himself a Lamb
He is meek, and he is mild;
He became a little child
I a child, and thou a lamb
We are called by his name
Little Lamb, God bless thee!
Little Lamb, God bless thee!
Little Lamb, God bless thee!
This embodiment of Christian ideals deserves to be praised, and has been blessed by God. Therefore, the repetition of the line is justified since it conveys both meanings.  The colloquial expression “God bless you” indicates reverence (which the lamb deserves on account of its perfection). The speaker is saying that the lamb is literally blessed by God.
The Lamb