This is based on a sermon I gave several years ago on a Shabbos we had dedicated to "infertility awareness"
Parshat Vayikra
by Rabbi Avi Billet
A number of Midrashim pose the question (ascribed either to Rabbi Yoseh, Yosi, or Dosa), "Why do children begin learning the [Chumash] from the section about korbanot [offerings]?" And the answer is, "Because just as the korbanot are pure, so are the children pure."
Rabbenu Bachaye looks at the word ויקרא, which has a small Alef, and tells us (after a lengthy analysis) that it is not God who is speaking to Moshe. It is the 'כבוד ה that we saw at the end of the book of Shmos, filling the Mishkan, talking to Moshe. That 'כבוד ה refers to a different small letter which is involved in creation – the ה in אלה תולדות השמים והארץ בהבראם. There the ה is also small. In other words, the ה of בהבראם references the Glory of God which calls Moshe with a small א. Connecting the dots, both small letters together remind us that even the sacrificial order is part of God’s plan for His world.