Avoiding showing your work adds a LOT to the discussion.
The ten northern tribes are called goyim in the scriptures numerous times. This is not readily noticeable in the English translations where the word “nations” is often put in its place.
The “lost sheep of the House of Israel” were the primary “gentiles” to which the apostles ministered. This is not universal though, as those that sojourned with Israel are spiritually a part of them.
Ezekiel 47:
[21] So shall ye divide this land unto you according to the tribes of Israel.
[22] And it shall come to pass, that ye shall divide it by lot for an inheritance unto you, and to the strangers that sojourn among you, which shall beget children among you: and they shall be unto you as born in the country among the children of Israel; they shall have inheritance with you among the tribes of Israel.
[23] And it shall come to pass, that in what tribe the stranger sojourneth, there shall ye give him his inheritance, saith the Lord GOD.
See also Exodus 12:48, Leviticus 17, 19, 20, Numbers 9:14