1)
Did they ask passersby?
1.
Rashi: You make parables about me.
2.
Malbim: If you would ask travelers, who saw many houses of Resha'im last and succeed, you could not deny this.
2)
Why did he say "v'Ososam Lo Senakeru"?
1.
Rashi: What they informed you, you do not refrain from putting it to the heart. This is like "va'Yisnaker Aleihem."
2.
Malbim: We bring a proof from the Klal, and not from the Prat (individual).
