Bible Verses About Polygamy: Forbidden

And thou shalt not take a wife to her sister, to be a rival to her, to uncover her nakedness, besides the other in her life-time.

Neither shall he multiply wives to himself, that his heart turn not away: neither shall he greatly multiply to himself silver and gold.

Yet ye say, Wherefore? Because Jehovah hath been witness between thee and the wife of thy youth, against whom thou hast dealt treacherously, though she is thy companion, and the wife of thy covenant.

And did he not make one, although he had the residue of the Spirit? And wherefore one? He sought a godly seed. Therefore take heed to your spirit, and let none deal treacherously against the wife of his youth.

And he answered and said, Have ye not read, that he who made them from the beginning made them male and female,

and said, For this cause shall a man leave his father and mother, and shall cleave to his wife; and the two shall become one flesh?

And there came unto him Pharisees, and asked him, Is it lawful for a man to put away his wife? trying him.

And he answered and said unto them, What did Moses command you?

And they said, Moses suffered to write a bill of divorcement, and to put her away.

But Jesus said unto them, For your hardness of heart he wrote you this commandment.

But from the beginning of the creation, Male and female made he them.

For this cause shall a man leave his father and mother, and shall cleave to his wife;

and the two shall become one flesh: so that they are no more two, but one flesh.

The bishop therefore must be without reproach, the husband of one wife, temperate, sober-minded, orderly, given to hospitality, apt to teach;

Let deacons be husbands of one wife, ruling their children and their own houses well.

if any man is blameless, the husband of one wife, having children that believe, who are not accused of riot or unruly.