1)
Who will clap their hands over him?
1.
Rashi: Those who knew him, and now see his breakage.
2.
Ibn Ezra: People clap over him, and over his house.
3.
Malbim: He claps his hands over the winds and laughs at them - he is not at all worried.
2)
Why does he whistle?
1.
Malbim: Also this is in jest. The wind cannot do anything to him - it does not budge him from his place.
