אֵ֗לֶּה שְׁמוֹת֙ בְּנֵ֣י אַהֲרֹ֔ן הַכֹּהֲנִ֖ים הַמְּשֻׁחִ֑ים אֲשֶׁר־מִלֵּ֥א יָדָ֖ם לְכַהֵֽן׃
Ce sont là les noms des fils d’Aaron, oints en qualité de pontifes, auxquels on conféra le sacerdoce.
Zohar
We have learned that it is written, "These are the names of the sons of Aaron, the priests" (Bemidbar 3:3) and also, "Nadab the firstborn, and Abihu, Elazar and Itamar" (Ibid. 2). It should read: 'And Elazar and Itamar" so why write "Elazar and Itamar?" (i.e. why delete the Vav). Abihu was equal to his two brothers and Nadab is equal to all the others.