What are the implications of "Gam Atem"?
"Rashi: "Gam Atem" implies that they (the second set of emissaries) are destined to end up as disappointed as the first ones. 1
Rashi: Even though this may not be what he meant to say, 'his mouth tripped him up'.
What are the implications of "Mah Yosef Hashem Daber elai"?
Rashi: Acknowledging the fact that Hashem would not change from Berachah to curse, he expressed hope that He not add to their blessings. He was unaware that this is a prophecy that Hashem will add to the Brachos through Bil'am!