On three other occasions, at Taberah (Num 11.1-3), Massah (Exo 17.1-7), and Kibroth-hattaavah (Num 11.31-34), the Israelites had provoked the LORD’s anger (see verse 7).
Quoted with permission from Bratcher, Robert G. and Hatton, Howard A. A Handbook on Deuteronomy. (UBS Helps for Translators). New York: UBS, 2000. For this and other handbooks for translators see here .