And G-d created the great sea-monsters (Gen. 1:21)
As Rashi notes, these were "the Leviathan (livyatan) and its mate." As explained by Chassidut, the Hebrew word "livyatan" means connection or joining. It refers to the very highest spiritual level, at which a person's attachment to G-d is constant and uninterrupted. Nonetheless, even on this superior level, every individual still needs a "mate," a good friend and supporter to help him in his service of G-d. (the Rebbe)
By the sweat of your face shall you eat bread (Gen. 3:19)
Rabbi Yosef of Novhorodok used to say: if a person has to work night and day just to fulfill the curse of, "by the sweat of your face shall you eat bread," how much more so should he expend time and effort to attain the blessing of, "blessed is the man who trusts in G-d"!
And G-d created the man (Gen. 1:27)
Why doesn't the Torah state after the creation of man, "and it was good," as it does after all the other things created during the six days? Every other creature was created complete, with its nature and instincts ready to be applied to the world. Man, however, was created incomplete, and it is his purpose in life to perfect himself. Human beings are given free will and the responsibility for their own development and improvement. That is why it doesn't immediately state, "and it was good" - we must wait and see how man behaves before passing judgement. (Klai Yakar)
He put him into the Garden of Eden to till it and to keep it (Gen. 2:15)
In the "Seven Blessings" of the marriage ceremony, the bride and groom are blessed with the following: "Happy and joyous may you be, O loving companions, like the joy of your progenitors in the Garden of Eden many years ago." May the young couple, just embarking on a life together, be as true and faithful to each other as Adam and Eve were in the Garden of Eden, when they were as yet the only two people in the world. (Otzarenu Yashan)