לִשְׁלֹ֥ל שָׁלָ֖ל וְלָבֹ֣ז בַּ֑ז לְהָשִׁ֨יב יָדְךָ֜ עַל־חֳרָב֣וֹת נוֹשָׁבֹ֗ת וְאֶל־עַם֙ מְאֻסָּ֣ף מִגּוֹיִ֔ם עֹשֶׂה֙ מִקְנֶ֣ה וְקִנְיָ֔ן יֹשְׁבֵ֖י עַל־טַבּ֥וּר הָאָֽרֶץ׃
pour faire du butin et te livrer au pillage, pour porter la main sur des ruines repeuplées et sur un peuple rassemblé d’entre les nations, en possession de biens et de richesses, et qui habite le nombril de la terre.
Radak
Glorious things – This means glorious attributes, and is speaking of those that inhabit you. Or its explanation is that glorious virtues will be attributed to you, that you are elevated over all lands in many things. The settled world is divided into seven portions, and Jerusalem is in the center portion, which is in the center of the civilized world. Thus it says “…dwelling on the navel of the earth.” (Ezekiel 38:12) Therefore its air is good, mingled from all airs, good for the health of the body and wisdom as it says “The fairest of branches, the joy of the entire earth…” (Psalms 48:3) and our Sages said “the air of the land of Israel makes one wise.” (Baba Batra 158b)
Kli Yakar
Another explanation: Because the Land of Israel is called the navel of the earth (Ezekiel 38:12), as it is in the center of the inhabited world, like the navel is in the center of the body, therefore their punishment was manifested in the location of their navel, because they spoke slander about this land which sits at the navel of the earth.