Question: Brian asked about Jesus believing that Adam and Eve were the first people because Jesus said in Mark 10:6-7 “from the beginning of the creation God made them male and female. For this cause shall a man leave his father and mother, and cleave to his wife.” Jesus also said in Matt 19:4-5 “Have ye not read, that he which made them at the beginning made them male and female, And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?”
Answer: Jesus does not talk about Adam and Eve being the first people in these scriptures. Jesus first quotes from Genesis 1 “God made them male and female” which is referring to Genesis chapter 1 verse 27. “So God made mankind in his image… male and female.” This is the Palaeolithic age. The word "mankind" is “adam” in Hebrew and is a plural word in Genesis chapter 1, like “human” can be plural - I am human, we are human. Adam in Genesis chapter 1 is plural, and the men and women in Genesis chapter 1 loved each other and were told to be fruitful. They needed no command to be faithful because they had not yet fallen. Faithfulness held each couple together and families were raised.
The Lord was pleased with early humanity, his wisdom rejoiced in human beings - "Rejoicing in the world, His earth, And having my delight in the sons of men" (Prov 8:31).
But humankind fell: Ecclesiastes 7:29 tells us that “God created mankind upright, but they have gone in search of many schemes." And because humans went in search of many schemes Romans 1 informs us, three times, that God “gave them over” to depravity.
God's displeasure is now upon fallen humanity - "Fornication, uncleanness, inordinate affection, evil concupiscence, and covetousness, which is idolatry: For which things' sake the wrath of God cometh on the children of disobedience" (Col 3:5-6).
Adam (the man – singular) in Genesis chapter 2 (in the Neolithic age) started the process of Christ’s genetic line through whom mankind would be redeemed. Mankind had fallen and faithfulness was no longer a priority for human beings so God gave us a command. When Moses, the narrator of Genesis, informs us that the Lord God made a woman from a man’s rib he took that opportunity, inspired by the Holy Spirit, to tell us that we should “cleave to our wives.” The seventh commandment reminds us of this charge.
Jesus quotes first from Genesis 1 and then he reminds us of the command issued in Genesis 2. Jesus doesn’t actually mention Adam and Eve.