Why does it say "v'Atem"?
Radak: He addresses the Sheluchim.
Malbim: Even though Hashem will make the portions, do not rely on a miracle; do an action of writing, so it seems that you are writing.
What is the meaning of "v'Yarisi"?
Rashi: I will cast.
Malbim: Refer to 18:4:1:1.