וַיִּשְׁמַ֗ע הַֽכְּנַעֲנִי֙ מֶ֣לֶךְ עֲרָ֔ד וְהֽוּא־יֹשֵׁ֥ב בַּנֶּ֖גֶב בְּאֶ֣רֶץ כְּנָ֑עַן בְּבֹ֖א בְּנֵ֥י יִשְׂרָאֵֽל׃
At narinig ng Cananeo, ang hari ng Arad, na naninirahan sa Negeb sa lupain ng Canaan, ang pagdating ng mga anak ni Israel.
Tze'enah Ure'enah
“The Canaanite heard” [33:40]. This means, the Canaanite heard that Aaron died in the month of Ab and he came to wage war against Israel.8Rashi, Numbers, 33:40.
Rashi
וישמע הכנעני AND THE CANAANITE HEARD This is stated here to tell you that Aaron’s death was indeed the news he heard — that the clouds of glory that until now had protected Israel had departed, and he therefore believed that liberty was now given to wage war against Israel. It is on this account that this is again recorded here (see Rashi on Numbers 21:1) (Rosh Hashanah 3a).
Sforno
וישמע הכנעני, this too was a credit for them in that this time they did not say: “let us appoint a new leader and return to Egypt.” (Compare Numbers 14,4 when they did) This time they were not afraid of facing war and battle.