"I would suggest that God would know when to call his book "done".
But God didn't write it... humans did.
One of the best things anyone can do, is to have a Concordance to the Bible in their personal library. Then you can see the original Hebrew words, and decide for yourself what the interpretation should be.
I can remember 30 years ago when I confirmed for myself that most of the references in the book of Genesis of 'God', and other scriptures, were really "Gods", plural.
http://en.wikipedia.org/wiki/Elohim "Elohim (אֱלוֹהִים , אלהים ) is a Hebrew word which expresses concepts of divinity. It is apparently related to the Hebrew word ēl, though morphologically it consists of the Hebrew word Eloah (אלוה) with a plural suffix."