For from the top of rocks I see him, and from hills I behold him; behold, a people that dwells alone, and is not reckoned among the nations.
Torah Temimah: Sanhedrin 39b — a Sadducee’s challenge answered from this verse.
English: A certain Sadducee said to R. Avina: It is written, “Who is like Your people Israel, one nation in the earth” — what is your distinction? You too are mixed with us, as it is written, “All the nations are as nothing before Him.” He replied: From your own [scriptures] they testify about us, as it is written, “And among the nations he is not reckoned.”
Proof from the verse against assimilation claims.
Israel’s separateness is not canceled by living among the nations — the nations themselves record that Israel is not counted as one of them.