The laws of Moses did not forbid polygamy, but they secured to the secondary wives such respect and attention as made the maintenance of many of them a matter of serious difficulty. Everywhere we find Moses interposing some guard to the helplessness of the woman, softening and moderating the harsh customs of ancient society in her favor. Men were not allowed to hold women-servants merely for the gratification of a temporary passion, without assuming the obligations of a husband. Thus we find the following restraint on the custom of buying a handmaid or concubine: "If a man sell his daughter to be a maid-servant, she shall not go out to work as the men-servants do, and, if she please not her master which hath betrothed her to himself, then shall he let her be redeemed; he shall have no power to sell her unto a stranger, seeing he hath dealt deceitfully with her. And if he have betrothed her to his son, he shall deal with her as a daughter. And if he take another wife, her food and her raiment, and her duty of marriage shall he not diminish. And if he do not these three things unto her, then shall she go out free without money." (Ex. xxi. 7.) This law, in fact, gave to every concubine the rights and immunities of a legal wife, and in default of its provisions she recovered her liberty. Thus, also, we find a man is forbidden to take two sisters to wife, and the feelings of the first wife are expressly mentioned as the reason: "Thou shalt not take unto thy wife her sister to vex her during her lifetime." In the same manner it was forbidden to allow personal favoritism to influence the legal rights of succession belonging to children of different wives. (Deut. xxi. 15.) "If a man have two wives, one beloved and the other hated, and they have both borne him children, and if the firstborn son be hers that is hated, then, when he maketh his sons to inherit, he may not make the son of the beloved firstborn, but he shall acknowledge the son of the hated for the firstborn." If a man slandered the chastity of his wife before marriage, she or her relations had a right to bring him before a tribunal of the elders, and, failing to substantiate his accusations, he was heavily fined and the right of divorce taken from him. By thus hedging in polygamy with the restraints of serious obligations and duties, and making every concubine a wife, entitled to claim all the privileges of a wife, Moses prepared the way for its gradual extinction. For since it could not be a mere temporary connection involving no duty on the man's part, since he could not sell or make merchandise of the slave when he was tired of her, since the children had a legal claim to support,--it became a serious matter to increase the number of wives. The kings of Israel were expressly forbidden to multiply wives; and the disobedience of Solomon, who followed the custom of Oriental sovereigns, is mentioned with special reprobation, as calling down the judgments of God upon his house.