'Own' in the Bible

And angels who did not keep their own domain, but abandoned their proper abode, He has kept in eternal bonds under darkness for the judgment of the great day,

wild waves of the sea, casting up their own shame like foam; wandering stars, for whom the black darkness has been reserved forever.

These are grumblers, finding fault, following after their own lusts; they speak arrogantly, flattering people for the sake of gaining an advantage.

that they were saying to you, “In the last time there will be mockers, following after their own ungodly lusts.”