In reading Genesis 1:26-28, and Genesis 5:2 we find that at first the name "Adam" belonged equally to male and female. God said: "Let US make man [or "Adam,"--it is the same word] in our likeness" and the story proceeds "In the image of God made HE HIM, male and female made HE THEM." Note that in the second clause, man is spoken of as both singular and plural. Adam was of both sexes- a hermaphrodite.
There is no "and" in the Hebrew. It is "in the image of God made HE HIM,"male-female" made He them." And you see that this was before Eve was formed, so it wasn't talking about her. This was known by Blavatsky and Steiner too.
This theory has been held among the Jews, at least as far back as the days of Jesus Christ, as shown by the writings of Philo, that man was, at the beginning male and female in one person. This belief will also be found among other peoples besides the Jews. After the androgynous state, it is thought that human beings were born in pairs, male and female twins.
This is called the separation of the sexes. In the past children born as hermaphrodites were considered to be quite special, godlike - not like in recent years where they have been operated on because they don't 'fit in' with a notion of normality.
This lends force to the Lord's words in Matthew 19:4, concerning the sanctity of marriage. We must remember He was speaking to men who were doubtless familiar with the theory: "Have, ye not read, that He Who made [no "them" in the original] from the beginning made them male and female." Again the rabbis did not seem to recognize an "and" in the expression in Genesis, "male and female," but read "male-female."
This saying of our Lord now makes perfect sense. We now know what He meant by "one flesh"- reflective of the first perfect Man- Adam Kadmon.
Dr. Hershon, in his book, Talmudic Miscellany, says: "There is a notion among the rabbis that Adam was possessed originally of a bi-sexual organism, and this conclusion they draw from Gen. 1:27, where it is said, 'God created man in His own image; male-female created He them.'..."
The first chapter of Genesis describes the original creation of "Adam," mankind - bearing in mind the fact that the word "Adam" is applied sometimes to mankind, and sometimes to the individual being who was husband of Eve. The second chapter describes the development of the first Adam into two sexes. Nowhere in the second chapter is found the word "create," of Adam, but a totally different word,"formed". "Formed" is used in Isaiah 44:2, 24 and 49:5, and used there exclusively of all idea of creation. Turn to Isa. 43:1, 7; 45:18, and see how it is used of a process additional to creation. This is what St. Paul refers to, where he says, "Adam was first formed then Eve"- 1 Tim. 2:13. He is speaking of development, not of original creation. Adam and Eve (as far as their primal state is concerned) were created simultaneously; but Adam was "formed," elaborated, first.
From Hebraic Literature Translations from the Talmud Midrashim & Kabbala:
These two natures, it was thought, lay side by side; according to some, the male on the right and the female on the left; according to others, back to back; while there were those who maintained that Adam was created with a tail, and that it was from this appendage Eve was fashioned.
Note: Some information in the above came from the God's Word to Women website.