The letter NUN is the probably the most prolific and insightful letter in the Hebrew alephbet. It is used to denote the totality of Torah in Psalm 119:105 (through 112) –

NUN. Thy Word a lamp unto my feet, and a light unto my path.

certainly one of the most quoted Scriptural verses.

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The letter Nun is the 14th letter of the Aleph-Bet, having the numeric value of 50. The pictograph for Nun looks something like a seed, whereas the classical Hebrew script (Ketav Ashurit) is constructed of a bent Vav with a crown like a Zayin.

– It represents one who is bent over in His Humbleness and one who is upright in His Righteousness – Y’shua.

– In Aramaic, the word Nun means a fish -Y’shua.

– and we have this:

And whenever the ark set out, Moses said, "Arise, O LORD, and let your enemies be scattered, and let those who hate you flee before you." And when it rested, he said, "Return, O LORD, to the ten thousand thousands of Israel.”     (Numbers 10:35-6)

What makes these two particular verses  set apart   is marked with wonder from the times of the earliest Judaic sages until today – the appearance of inverted Nuns at the beginning and end.

Please read the entire linked webpage for more of the wonder of this passage and the letter Nun.

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So, we can surmise from this that these few verses in and of themselves create their own chapter of Torah, leading to the division of the Five Books into the Seven Books of Moses.

It has been also been theorized that these two verses form an incomplete chapter of Torah that will be finished at a later date. 

Torah is Perfect.  Also, YHWH changes not:

so addition is hardly likely, but this points to a future event – the completion of Torah, the arrival of Moshiach ben David, our long-awaited Joshua Son of Nun,  where it will be written on the Hearts of All – the Era of Shalom Shalom:  Perfect Peace.

Isaiah 26:1-3, "In that day shall this song be sung in the land of Judah; We have a strong city; Y’shua will appoint  walls and bulwarks.  Open ye the gates, that the righteous nation which keepeth the truth may enter in.   Thou wilt keep him in perfect peace, whose mind is stayed on thee: because he trusteth in thee."

Torah will then cease to be written and will be acted upon  L’Olam Va‘ed.