Kommentar zu Wajikra 25:55

כי לי מי ישראל עבדים FOR UNTO ME THE CHILDREN OF ISRAEL ARE SERVANTS — My document (deed of purchase) is of an earlier date (cf. Rashi on v. 42).

כי לי בני ישראל עבדים, "For the children of Israel are My servants, etc." Why did the Torah write once more עבדי הם, "they are My servants?" Perhaps the point G'd makes here is that "they are My servants" as they are of sacred origin, their souls and their bodies are intrinsically holy independent of the Exodus from Egypt. The factor which obligates the Israelites to conduct themselves in a manner befitting holy creatures is "that I took them out of the land of Egypt." Ever since, G'd says, they themselves realise that they are My servants.

כי לי בני ישראל עבדים, “for the Children of Israel are My servants.” They are not the slaves of Esau.