Zephaniah 2:9

Because of their hostility toward the Israelites, almighty Yahweh, Israel’s God, would definitely destroy these nations as He had Sodom and Gomorrah (cf. Isaiah 15-16; Jeremiah 48:1 to Jeremiah 49:22; Ezekiel 25:1-14; Ezekiel 35; Amos 1:11 to Amos 2:3). God had completely destroyed these cities that stood in the territory later occupied by Moab shortly before either of these nations came into existence (Genesis 19:23-29). Sodom and Gomorrah had become a notorious perpetual desolation, a place of salt pits where nothing but nettles grew (cf. Jeremiah 48:9), and that would be what Yahweh would make of Moab and Ammon. The remnant of Israelites would plunder these neighbors and take over their territory as an inheritance from their God (cf. Isaiah 11:14).