Bo’/Enter!, Exodus 10:1-13:16, covers the climax of the 10 plagues (the final 3).  It is interesting to note that the number 3 is emphasized here as not only are 3 plagues focused on, but the title Bo’ בּא itself has a numerical value of 3, and it is the 3rd parshah of Shemot/Exodus.  3 is the heir, the firstborn! In the midst of declaring "let my firstborn go", we find Israel given special insight into the calendar...could the calendar Israel honors reveal whose firstborn we are and provide a doorway to our redemption?