ועתה כתבו לכם את השירה הזאת
Chazal derive from the above pasuk that each Jew is commanded to write a Sefer Torah – or, at least, participate in the writing of a communal Sefer Torah. As this is the last of the 613 mitzvos, we glean from here that the entire Torah must be recorded for the purpose of knowing and understanding its mitzvos. Without learning, there can be no knowledge; and, without knowledge, there can be no observance; and, without personal observance, we have nothing to transmit to the next generation. Why is the mitzvah to write a Sefer Torah enjoined to the individual as…