And when the days of her purification have been completed, whether for a son or for a daughter, she shall bring a sheep in its first year as a burnt offering, and a young dove or a turtle dove as a sin offering, to the entrance of the Tent of Meeting, to the kohen. (Leviticus 12:6)Painting by Yoram Raanan: www.RaananArt.comHave you ever been asked “What is your earliest memory?” I have been asked that many times. There was a time – long ago, when I was a graduate student in psychology – when that question would be posed, and the answer was considered very revealing of the respondent’s deeper psyche.Such exceptionally early memories were known in psychoanalytic circles as “screen memories” and were considered quite significant diagnostically. The scientific significance of such memories is now considered to have no basis, but they are certainly interesting and make for great conversation.Considering the question posed, I had a clear image of my first memory. I was standing outside a brick building, looking up at my father, may he rest in peace, surrounded by a small crowd of other men. Everyone was looking at the moon.This may have been my first experience, at age three or four, of kiddush levana, the monthly ceremony during which the congregation exits the synagogue and acknowledges the first appearance of the new moon. I have another memory of the religious significance of this ceremony. I remember being told that the Hebrew word for month is hodesh and the Hebrew word for new is hadash. It was then that I learned of the significance of the new moon, which commences a new month, and became aware for the first time that the Jewish people follows the lunar, not solar, calendar.When it is the last Shabbat before Rosh Hodesh Nisan, the month of Passover, springtime, and the beginning of the new calendar year, in addition to reading Parshat Tazria, we also read an additional portion from Exodus (12:1-20) known as Parshat Hahodesh. Famously, according to Rashi (on Genesis 1:1), these verses are the true beginning of the Torah.Newness and the constant potential for renewal are the central theme on this Shabbat. It is also the central theme in the Jewish calendar and, one might say, in Jewish tradition in general. The symbolism of the moon constantly renewing itself is coupled with the symbolism of springtime and nature’s renewal.We herald the approaching holiday of Passover, but not as a holiday of freedom and redemption. Not just yet. We recognize that Passover is the Festival of Springtime (Hag Ha’aviv). Passover has a myriad of symbolic meanings, one of which is the perennial opportunity for personal and national rejuvenation.When I focus on my earliest memory with extra effort, I remember what the men who surrounded me under that moon so long ago were saying to each other.Each man addressed three others with the traditional Jewish greeting, “Shalom aleichem.” I remember being puzzled by why Daddy was greeting friends that he saw daily with this special welcome, generally reserved for those whom one hadn’t seen in a while.I didn’t ask him about it then; after all, it was still the era when “children were to be seen and not heard.” But I have since answered the question for myself, and have explained it to my children and to my students as follows.The new moon is a symbol for renewal. It is a time for each of us personally to begin again, to forget past mistakes, to turn over a new leaf. It is also a time for us to renew and recharge our relationships with others. It is a time to begin a new slate, to forgive each other, and to appreciate each other anew. Hence, we greet at least three friends, even old friends, with “Shalom aleichem,” as though they were newcomers in our lives.And so the supplemental reading teaches us about newness and about – to borrow Lincoln’s famous phrase – “a new nation, conceived in liberty.” Is there any connection between the supplemental Parshat Hahodesh and the main Torah portion of Tazria? I would say so, for the parasha begins, “Speak to the Children of Israel, saying, If a woman conceives and bears a male child, she shall be ritually impure seven days... and on the eighth day, the flesh of his foreskin shall be circumcised” (Lev. 12:1-3). The opening theme is also one of a new beginning, the birth of a baby. It is a time for the celebration of the entry of a new member into the Jewish people. Hence, there is surely a connection between Tazria and Parshat Hahodesh. They both adumbrate the centrality of the new in our tradition.It is at this point that you, dear reader, might well ask: If we are celebrating not just newness in general but the arrival of a new human being into this world and a new member of the Jewish faith, why does the mother enter the realm of ritual impurity? Should she not rather enter the realm of sanctity and purity? I found a most thought-provoking answer to this oftasked question recorded in the name of that most profound of the hassidic masters, Rabbi Mendel of Kotzk.He cites the passage in the Talmud that states that the “keys of childbirth” are kept by the Almighty Himself. It is He who presides, as it were, over “labor and delivery.”Once the baby is born, His Presence departs as well. Just as when the soul of man departs, impurity descends, so, too, when the Divine Spirit departs, impurity ensues.The Kotzker once again teaches a very deep, albeit existentially pessimistic, lesson. Perhaps one must be Mendel of Kotzk to truly understand why he forces us to face darkness even at the moment of joyous celebration of birth.For most of us, on the other hand, the lesson of our parasha is of light and not of darkness. It is an occasion to contemplate all that is new in our natural and interpersonal environments, especially in the spring season.It is an opportunity to seize the moment by taking advantage of the constantly available potential for renewal of ourselves and of our friendships and relationships.Is this just a Jewish message? Of course not. It is a message for all of humanity. And it is so well expressed by the famous adventurer and explorer of the sea, Jacques- Yves Cousteau, in his book The Silent World, when he writes: “Sometimes we are lucky enough to know that our lives have been changed, to discard the old, embrace the new, and run headlong down an immutable course.It happened to me at Le Mourillon on that summer’s day, when my eyes were opened to the sea.”In reading Parshat Tazria, our eyes open to a different kind of sea. May we embrace the new and run, headlong and happy, down a different and better course. The writer, a rabbi and doctor of psychotherapy, is the executive vice president emeritus of the Orthodox Union of North America.