To some people Polygyny is sin. The issue of sin is also a interesting one. What is sin?
Some may ignorantly think polygyy is sin. Some are gender confused too but we dont pretend their position is valid or changes the truth.
To be able to correct someone like we are instructed to in the following verse, you need to be able to SHOW THEM where they are outside if what YHWH has authorized.
Matthew 18:15-17
"Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
16But if he will not hear
thee, then take with thee one or two more, that in the mouth of two or three witnesses every word may be established.
17And if he shall neglect to hear them, tell
it unto the church: but if he neglect to hear the church, let him be unto thee as an heathen man and a publican."
Without being able to show someone in black and white where they are wrong, all you have is your own stupid, fallible, mortal, perhaps ignorant, certainly NOT divine, OPINION.
My sisterwife is not my daughter, granddaughter, or my husband's former sister in law. There is no other law about who he can marry that they can bring.
- Violation of the law (Torah) - Romans 4:15
- Missing the mark. In this case what is the mark? - Romans 3:23
- Not doing what you know to do - James 4:17
- Anything not of faith - Romans 14 : 23
- Not walking in love
Out of that list there are only some violations of the law that directly impact others ("trespass against thee") and those are the sins we can and should confront others with. ...first privately, then with witnesses, BEFORE breaking fellowship.
The other matters are basically between the individual and Yeshua/Jesus. It is the Holy Spirit that convicts hearts and changes lives.
To be honest it is difficult to legislate these matters. I find that Christian sometimes do better at fellowship with non-believers than believers.
Maybe because it is not our place to legislate, only call people out on what we are aware of as it relates to us personally.
We have experienced the same thing with other believers. I think part of the problem is people thinking too much of their own opinion or position, and trying to enforce their PERSONAL preferences (including monogamy) on others as if their will is equal to His law.
With non believers there is less crossing lines and trying to claim authority where there really is none.
Edited to add that fellowship is with others we treat as "equals" (redeemed sinners walking in faith) while most Christians also interact with others who are not redeemed as well. The interactions with the others is more like evangelizing and it is offensive when Christians refuse fellowship...but continue "outreach" with your children.