What is the meaning of "Daber Yedabru ba'Rishonah"?
Rashi: You should have spoken first for Shalom - perhaps they will make peace with you (Devarim 20:11)! You should not have fought against [the city]!
Radak (19): I heard them saying from the beginning [that before making war with a city, you offer Shalom]!
What is the meaning of "Sha'ol Yisha'alu b'Evel"?
Rashi: Did your troops offer Shalom to this city called Evel?
Malbim: Everyone in this city (Evel) is asking [why did you not speak initially, to say why you fight us]?
What is the meaning of "v'Chen Hesamo"?
Rashi: [Had you offered Shalom, the city] would have immediately made Shalom with you.
Radak (16): Divrei Torah ended here (people do not know Torah law). When you come to make war with a city, you offer Shalom!
Radak (19): [I heard them saying from the beginning], and still now [they are saying that before making war with a city, you offer Shalom]!
Malbim: [They were asking here why you fight us,] and they ceased asking [for no one can answer! We do not know at all!]