This is a Parshas Hachodesh maamar. The two levels of the Chidush of Nissan 1) Rosh Chadashim 2) Rishon….. LiChodshei HaShana,correspond to 1) The miracles that are higher than nature, and 2) How these miracles merge with nature . This Maamar also explores the miracle of creation that comes before the New year of Nissan that is connected to Tishrei: 1) of nature [A. Yesh Meayin, B. That it comes from Atzmus], 2) in nature [Lo Yishbosu].