I always thought it was for the military, but anons misinterpreted it. People started posting videos of themselves taking some oath, and it went viral. Q supported it by posting links to people's oath videos, but I don't think any oath post was meant for people.
It's about the military imo.
https://www.bitchute.com/video/DFYA4F18dNQd/?
Gambino Crime Family Associate Convicted by Federal Jury in Murder and Robbery of Brooklyn Man
Defendant Shot His Longtime Friend in the Back of the Head and Stole the Assets of the Victim’s Loan Business
https://www.justice.gov/usao-edny/pr/gambino-crime-family-associate-convicted-federal-jury-murder-and-robbery-brooklyn-man