'Own' in the Bible

and He has kept, with eternal chains in darkness for the judgment of the great day, the angels who did not keep their own position but deserted their proper dwelling.

These people are discontented grumblers, walking according to their desires; their mouths utter arrogant words, flattering people for their own advantage.

they told you, “In the end time there will be scoffers walking according to their own ungodly desires.”