Charles Ellicott Commentary Leviticus 25:44

"And as for thy bondmen, and thy bondmaids, whom thou shalt have; of the nations that are round about you, of them shall ye buy bondmen and bondmaids." — Leviticus 25:44 (ASV)

Both thy bondmen, and thy bondmaids, which thou shalt have, shall be of the heathen. —Rather, As for your bondmen and bondmaids which you must have of the heathen, etc. As the Law forbids the Israelites to have their brethren as bondmen, or employ them in menial work that belongs to slaves, the Lawgiver anticipates a difficulty that the Hebrews might raise against these enactments. If they are not to be engaged in this work, who then is to do it? Hence the reply in the verse before us.

Of the heathen that are round about you. —These are to be purchased to do the necessary work. The Israelites, however, were restricted to the Ammonites, the Moabites, the Edomites, and the Syrians, who were their neighbors, but were not permitted to buy any slaves from the seven nations who were in the midst of them, and whom they were ordered to destroy (Deuteronomy 20:16–18).