1)
What are the connotations of the words "Va'yih'yu le'Neis"?
1.
Rashi and Targum Onkelos: It means that they became a sign (a warning) 1 and a remembrance - to prevent a repetition of Zarim attempting to usurp the Kehunah.
2.
Targum Yonasan: It means that they became a test - to see whether the people would do Teshuvah. 2
3.
Oznayim la'Torah: It means that their death was a miracle, in that they they died a death that nobody before or since has ever died. 3