While today even by the existing laws and really after a long struggle physical slavery has been abolished world wide, even in the US, Canada, Great Britain as well now,
Romans 7:6 – But now, by dying to what once bound us, we have been released from the law so that we serve in the new way of the Spirit, and not in the old way of the written code.
Let me be clear that all submission in the New Testament is voluntarily, non enforceable, and reciprocal too. Christ alone is still the sole head of the church, and not any man!!
No doubt about it the institutionalized Stalin type control destroys the churches.