I think you know.
You can take it out of context but he was talking about in general unless the Lord says other wise.
Because in each dispensation on earth there was plural marriage an ordinance of the Lord, not every child of God received this ordinance.
BTW this is off topic from the thread which is trying to preserves One man One women as the family united but some here are so toxic and dull they miss the real fight here on earth they rather go back to the 1800’s go figure...