וֶֽהֱשִֽׁיבְךָ֨ יְהוָ֥ה ׀ מִצְרַיִם֮ בָּאֳנִיּוֹת֒ בַּדֶּ֙רֶךְ֙ אֲשֶׁ֣ר אָמַ֣רְתִּֽי לְךָ֔ לֹא־תֹסִ֥יף ע֖וֹד לִרְאֹתָ֑הּ וְהִתְמַכַּרְתֶּ֨ם שָׁ֧ם לְאֹיְבֶ֛יךָ לַעֲבָדִ֥ים וְלִשְׁפָח֖וֹת וְאֵ֥ין קֹנֶֽה׃ (ס)
And the LORD shall bring thee back into Egypt in ships, by the way whereof I said unto thee: ‘Thou shalt see it no more again’; and there ye shall sell yourselves unto your enemies for bondmen and for bondwoman, and no man shall buy you.
Rashi on Deuteronomy
באניות [AND THE LORD WILL BRING THEE INTO EGYPT AGAIN] באניות — the latter word means, in ships, i.e. He will bring you again into captivity to Egypt.
Sforno on Deuteronomy
והתהכרתם, you will begin to manufacture or make by hand all kinds of goods the host country lacks in order to secure your economic well being, but
Rabbeinu Bahya
והתמכרתם שם, “and you will offer yourselves for sale there.” you will actively beg to be bought as slaves (an ultimate degradation of yourselves).
ואין קונה, “but there will be no buyer.” This is a promise by G’d who spares you this ultimate degradation.
ואין קונה, “but there will be no buyer.” This is a promise by G’d who spares you this ultimate degradation.