1)
What arrows did Hashem send?
1.
Rashi: Refer to 22:13:1:1 and the note there.
2.
Radak (Tehilim 18:15): They (and the lightning) are harsh decrees.
3.
Malbim (Tehilim 18:15): The lightning shattered the clouds, and they scattered and spilled their water. It is as if Hashem sent arrows to dispel the clouds.
