TCR 282, 290 - The Ten Commandments Are Divine Laws

TCR 282
One might therefore be amazed that these laws,
which are universally known on earth,
were proclaimed in such a miraculous fashion
by Jehovah Himself from Mount Sinai.
But pay attention:
they were proclaimed in such a miraculous fashion,
so that it should be known
that those laws were not just civil and moral legislation,
but also Divine laws,
so that acting against them
was not only wronging the neighbor,
that is, one's fellow citizens and society,
but also sinning against God.
So by being proclaimed by Jehovah from Mount Sinai
they became religious laws.
It is obvious that any commandment given by Jehovah
is intended to be a religious command,
something that must be done,
if one is to be saved.

TCR 290
No one who is ignorant of the nature of the Word
can have the slightest idea
that infinity is contained in its details,
that is to say,
that its contents are countless,
so that not even the angels can exhaust them.
Anything found there can be compared to a seed,
which planted in the ground can grow into a great tree,
and produce an abundance of seeds;
these again produce similar trees to form a garden,
and their seeds in turn form other gardens,
and so on to infinity.
The Word of the Lord is like this in its details,
and such above all are the Ten Commandments.
For since they teach love to the Lord
and love towards the neighbor,
they are a short summary of the whole Word.
The Lord also shows
that the Word is like this by a comparison:

The kingdom of God is like a mustard seed,
which a man took and planted in his land.
This seed is smaller than all other seeds;
but when it has grown up,
it is larger than any plant,
and it becomes a tree,
so that the birds of the sky come
and nest in its branches.
(Matthew 13:31, 32; Mark 4:31, 32; Luke 13:18, 19;
cf. also Ezekial 17:2-8)

The fact that such an infinity of spiritual seeds or truths
lies in the Word,
can be established from the wisdom of the angels,
the whole of which is derived from the Word.
In their case wisdom goes on growing for ever.
The wiser they become,
the more clearly do they see that wisdom has no end;
and they perceive that they are merely at its entrance,
and they cannot reach
even the minutest part of the Lord's Divine wisdom.