-Is Polygamy a sin, and why? What if they are married under God and believe in their heart it is right, does it still count as a sin?
it is a sin, Read John chapter 4 in context, the samaritan woman who had 5 husbands. the one she was with, the LORD disagreed to her being her husband
also
Rom 7:1 Know ye not, brethren, (for I speak to them that know the law,) how that the law hath dominion over a man as long as he liveth?
Rom 7:2 For the
woman which hath an husband is bound by the law to her husband so long as he liveth; but if the husband be dead, she is loosed from the law of her husband.
Rom 7:3 So then if, while
her husband liveth, she be
married to another man, she shall
be called an adulteress: but if her husband be dead, she is free from that law; so that she is no adulteress, though she be married to another man.
vice versa is true, the laws of GOD work on both sexes.
-Is there any way a woman could keep from being jealous of the multiple wives her husband has? Could a marriage like this function properly and last long-term?
It will function properly, taking care of ONE lady in ALL FIELDS, from spiritually, to the bed is impossible. Plus what was the GENESIS? did GOD call two eves and one Adam to be ONE, or did HE mention that EVE and ADAM are ONE. two IN ONE that is. not 3 in one.. original plan of GOD was that One man, One wife, any one that breaks this SINs. the LORD JESUS CHRIST mentioned this in Matthew chapter 19.
The responsibility is major, and can have major bad effects on the kids, the wife, and even the kids, kids. psychologically, and other fields of a childs brain. there are parents who can NOT perfect ONE CHILDS health, spiritually, physically even psychologically no matter how hard they try. they always need GOD. and GOD is not a GOD of Adultery..
he needs to dump the concubines, have no dealings with them. and stick with the first. or its Hell.
-What do you think about the more children one man bears, the closer he is to being Godly? Is there any truth to that?
Children are blessings yes, and the word blessing has a definition of "something prompting to happyness", when GOD blesses someone it brings HAPPYNESS to their lives but not necessarily means that they are CLOSE to GOD. Closeness to GOD is shown by how much WE have FAITH WITH WORKS.
- If there is no sex involved with the other women in the marriage, aside from the first wife, is it still a sin?
yup it is still sin, the first wife is the only wife the LORD knows. there are other are his concubines so to speak and that is ADULTERY.