The table below presents an aligned extract of verses or verselets in Nu16-01c, 1C06-22:23. Both verses/verselets discuss the Korach family. The alignment justifies the Rashi comment that: The Torah discusses the bad Korach rebellion and the good songs sung in the Temple by the Korachites. Genealogy discretely omits Jacob's name by the rebellion but includes it by the Temple songs. This omission / inclusion discretely indicates disapproval and approval respectively.

Verse	Text of Verse	Rashi comment
Nu16-01c	He took ahold of himself, Korah, the son of Izhar, the son of Kohath, the son of Levi, and ...	The Torah discusses the bad Korach rebellion and the good songs sung in the Temple by the Korachites. Genealogy discretely omits Jacob's name by the rebellion but includes it by the Temple songs. This omission / inclusion discretely indicates disapproval and approval respectively.
1C06-22:23	And these are they whom David set over the service of song in the house of the Lord, after the ark rested there. And they ministered .... And these are the men who served and their sons. Of the sons of the Kohathites: Heman a singer, the son of Joel, the son of Samuel, The son of Elkanah, the son of Jeroham, the son of Eliel, the son of Toah, (K) The son of Zuph, the son of Elkanah, the son of Mahath, the son of Amasai, The son of Elkanah, the son of Joel, the son of Azariah, the son of Zephaniah, The son of Tahath, the son of Assir, the son of Ebiasaph, the son of Korah, The son of Izhar, the son of Kohath, the son of Levi, the son of Jacob

Advanced Rashi: Some alignments are more explicit. For example the Decalogue speaks about the prohibition of making vs. having idols thus explicitly indicating two prohibitions: manufacture and possession of idols. By contrast some alignments are more discrete indicating their messages with omissions rather than with explicit contrasts.

I am indebted to Dr. Aviva Zornberg's new book, The Murmuring Deep: Reflections of the Biblical Unconscious, for inspiring the understanding of this Rashi. I was at the launching of this book at Pardes in June a few weeks ago. There professor David Shulman used Indian philosophy to describe Aviva's book as studying silence. The book describes several types of silences and the communications implicit in them. Aviva picked up this theme in her own talk on her book. Using Kabbalistic terminology she distinguished between voice and words Frequently the Biblical text will give voice without words and it is important to understand the implied content. You can google the book title to find reviews or purchase it.

Using these concepts we can see the omission of Jacob's name by Korach as an unworded voiced silence. This particular silence indicates disapproval.

It is important to emphasize the relationship between the alignment and this silence. The alignment - one verse with mention of Jacob and one verse without proves the intentionality of the Author in the omission. That is, the sole purpose of the alignment is to prove that the silence is really there. We must then interpret the silence - the omission - as indicating disapproval.

Interestingly Rashi adds: Jacob, in his blessings explicitly states In their congregations let my honor not be mentioned.... Hence we see that Jacob's name was not mentioned in Nu16-01. However I think it important to emphasize that the true driving force of the omission is disapproval. The explicit verse in Jacob's blessings is simply an added embellishment. Indeed it shows how Korach's rebellion can be traced back to Levi's attack on Joseph. My point in not emphasizing this added verse is to show that it is only an embellishment; the real driving force behind Rashi is the alignment which points to a voiced silence.