could someone please paraphrase this for me? Thanks.

William Blake wrote a poem entitled "The Lamb," among a series of poems describing god's creation. I got a copy of it for you:

Little Lamb who made thee
Dost thou know who made thee
Gave thee life & bid thee feed.
By the stream & o’er the mead;
Gave thee clothing of delight,
Softest clothing wooly bright;
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 & he is mild,
He became a little child:
I a child & thou a lamb,
We are called by his name.
Little Lamb God bless thee.
Little Lamb God bless thee.

The reference is to Jesus, who, in christian iconography, is often portrayed symbolically as a lamb, and often called the Lamb of God.

Homely can mean either unattractive, or it can mean cozy, comfortable, like one's own home. Munro means it in the second sense here. The sentiment referred to is that type of christianity which reflects the meek, mild, loving and simple version of Jesus, a gentle redeemer. This is the "wholesome gentle-hearted creed" referred to earlier. Munro is linking the image of the Lamb of God to this wholesome gentle-hearted creed, to create an idea of the beautiful homely Christ child sentiment. It is christianity as a creed of love and acceptance.

Thanks Setanta, but what is "sentiment of Saxon Europe"?

Nonsense, basically. The sentiment referred to the gentle version of christianity which Comus' uncle practices. There is no such thing as Saxon Europe. In Germany, there was Upper and Lower Saxony. They bore not cultural relation at all to England, which had long ago ceased to be Anglo-Saxon. This is just Munro's typical, ambiguous word play.

Yeah, this style is a big trouble for translators. Thanks Setanta.

This really has nothing to do with Munro, but i thought you might find it interesting. The symbology of Jesus as the Lamb of God is a very strong theme in christianity. There is a Latin prayer which was often repeated in Catholic churches, agnus dei qui tollis peccata mundi--"Lamb of God, who takes away the sins of the world." This has been expressed in one of the most beautiful liturgical songs going, which is entitled Pie Jesu, and which was written by Andrew Lloyd Weber. Here it is sung by Hayley Westenra, probably the greatest natural singing talent of our age, and of any age; she was just 15 years of age when she sang this:

Quite the spectacular voice that little lady has.