Charles Ellicott Commentary Deuteronomy 28:68

"And Jehovah will bring thee into Egypt again with 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 bondwomen, and no man shall buy you." — Deuteronomy 28:68 (ASV)

The Lord shall bring you into Egypt again with ships. —Josephus says this was done with many of the Jews by Titus.

You shall see it no more again. —Deuteronomy 17:16.

You shall be sold ... and no man shall buy you. —Rashi explains as follows: “You shall desire to be sold—you shall offer yourselves as slaves to your enemies, and shall be refused, because you are appointed to slaughter and destruction. Or the sellers shall sell you to other sellers, and no one will care to keep you.”

But the same word is used in the following passage by Nehemiah: “We after our ability have redeemed our brethren the Jews, who were sold to the heathen” (Nehemiah 5:8). Probably the meaning in Deuteronomy is similar: “You shall be sold as slaves to your enemies, and there will be no one to redeem you.”