The people of Israel will leave the places where they were slaves and come back to the land of Israel. (See: [[rc://en/ta/man/translate/figs-explicit]])
The hand can be a metonym for the power the hand exercises or a synecdoche for the person. AT: "I will have the people of Judah sell your sons and your daughters" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-synecdoche]])