In the beginning, God gave to Adam one wife, thus showing his order. He never designed that man should have a plurality of wives. Lamech was the first who departed in this respect from God's wise arrangement. He had two wives, which created discord in his family. The envy and jealousy of both made Lamech unhappy. When men began to multiply upon the face of the earth, and daughters were born unto them, they took them wives of all which they chose. This was one of the great sins of the inhabitants of the old world, which brought the wrath of God upon them. This custom was practiced after the flood, and became so common that even righteous men fell into the practice, and had a plurality of wives. Yet it was no less sin because they became corrupted, and departed in this thing from God's order. p. 99, Para. 1, [3SG].
The Lord said of Noah and his family who were saved in the ark, "For thee have I seen righteous before me in this generation." Noah had but one wife, and their united family discipline was blessed of God. Because Noah's sons were righteous, they were preserved in the ark with their righteous father. God has not sanctioned polygamy in a single instance. It was contrary to his will. He knew that the happiness of man would be destroyed by it. p. 100, Para. 1, [3SG].
Abraham's peace was greatly marred by his unhappy marriage with Hagar. "And the Lord said unto Abram, lift up now thine eyes and look from the place where thou art, northward, and southward, and eastward, and westward, for all which thou seest to thee will I give it, and to thy seed forever. And I will make thy seed as the dust of the earth, so that if a man can number the dust of the earth, then shall thy seed also be numbered." "The word of the Lord came unto Abram in a vision, saying, Fear not, Abram, I am thy shield, and thy exceeding great reward. And Abram said, Behold, to me thou has given no seed, and lo, one born in my house is mine heir." p. 100, Para. 2, [3SG].
As Abram had no son, he at first thought that his trusty servant, Eliezer, should become his son by adoption, and his heir. But God informs Abram that his servant shall not be his son and heir, but that he should really have a son. "And he brought him forth abroad, and said, Look now toward heaven, and tell me the stars, if thou be able to number them; and he said unto him, So shall thy seed be." p. 100,