What is the meaning of "v'Hisnachalum"?
Rashi: They will bequeath from them. The same applies to "v'Hisnachalten Osam" (Vayikra 25:46).
Will converts be our slaves?
Malbim: No. First they will accept those who converted when Yisrael did not have total serenity. Afterwards, Nochrim will bring [Yisrael] to their place, and they will not be accepted for converts. Rather, they will be slaves.
What Avodah will the slaves do for Yisrael?
Radak: "V'Amdu Zarim v'Ra'u Tzonechem u'Vnei Nechar Ikareichem v'Chormeichem" (61:5).
Why will they take their captors captive?
Malbim: They will pay Midah k'Neged Midah to those who did evil to them. Likewise, "v'Radu b'Nogesheihem" - they will impose harsh Avodah on those who imposed it on them.
What is "v'Radu"?
Rashi: It is an expression of subjugation and oppression, like "Lo Sirdu Vo b'Farech" (Vayikra 25:46).