Joshua 10:40

So Joshua conquered the whole region—the hill country, the Negev, the foothills, and the slopes, together with all their kings—leaving no survivors. He devoted to destruction everything that breathed, just as the Lord, the God of Israel, had commanded.

Note Hebrew Shephelah or lowlands; that is, the western foothills of Judea

BSB · Berean Standard Bible
So Joshua smote all the country of the hills, and of the south, and of the vale, and of the springs, and all their kings: he left none remaining, but utterly destroyed all that breathed, as the Lord God of Israel commanded.
KJV · King James Version
So Joshua struck all the land, the hill country, the South, the lowland, the slopes, and all their kings. He left no one remaining, but he utterly destroyed all that breathed, as the Lord, the God of Israel, commanded.
WEB · World English Bible
So Joshua smote all the land, the hill-country, and the South, and the lowland, and the slopes, and all their kings: he left none remaining, but he utterly destroyed all that breathed, as Jehovah, the God of Israel, commanded.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

all the country
Joshua 15:21–63; Joshua 18:21–28; Joshua 19:1–8, 40–48
utterly
Joshua 10:35, 37; 1 Kings 15:29; Psalm 9:17; 2 Thessalonians 1:7–9
as the Lord
Joshua 6:17; Joshua 8:2, 27; Joshua 9:24; Exodus 23:31–33; Exodus 34:12; Deuteronomy 7:2–16; Deuteronomy 26:16, 17