You shall surely set over yourself a king whom the Eternal your God will choose; from among your brethren you shall set a king over yourself; you may not place over yourself a foreigner who is not your brother.
English: What does the Torah teach by saying ‘som tasim’? To say that if he dies, they shall appoint another in his place.
On the daf / in context: Sifrei reads the doubled language as teaching continuity of the institution of kingship: the mitzvah is not exhausted by one appointment.
Type of Learning
Derash on the doubled verb (Sifrei) — the repetition teaches that the obligation continues after the first king’s death.
What Is Learned
The mitzvah of kingship is ongoing. When a king dies, the people must appoint a successor so that the throne is never left vacant.