What is the significance of the sequence of these two current Pesukim?
Rashi (from Ta'anis 30b): From the time of the Meraglim and onwards, 1 the Torah does not say "Vayedaber Hashem", 2 and it is only after the last person of that generation died that it says "Vayedaber Hashem Eilai" - that the Shechinah spoke to him with love.
QUESTIONS ON RASHI
Rashi writes that from the Meraglim and onwards, it does not say "Vayedaber Hashem" until the generation died out. We find that it says Vayedaber Hashem during this time!
Rashi (in Ta'anis 30b, DH 'be'Sof'): Hashem did not speak to Moshe mouth to mouth, only in visions of the night.
Rashbam (Bava Basra 121a) #1: If necessary. Hashem spoke to Moshe via an angel, or through the Urim ve'Tumim.
Rashbam (Bava Basra 121a) #2: Hashem spoke to Moshe only when necessary.
R. Chaim Paltiel: Surely Mitzvos were given with va'Ydaber, but other matters, it says va'Yomer. 1
Sifsei Chachamim: Refer to 2:16:1:1**.
Rashi writes that "va'Ydaber" is an expression of endearment. Rashi himself (refer to Bamidbar 12:1:1:1 and the note there.) said that it is harsh talk!
R. Chaim Paltiel: [Hashem's] Dibur towards Moshe is endearment. Dibur of people is always harsh. 1
Riva: Rashi means that Dibur is elaboration; it shows endearment, like lovers talk at length. Amirah is concise. 2
Gur Aryeh, RS"R Hirsh citing Korban Aharon: There is no contradiction. Amirah is a mere message; it does not refer to the act of speaking. Dibur implies articulation of letters. It is forceful, but it also implies face to face contact.
Kli Yakar: Dibur is harsh. It shows endearment, for "Es Asher Ye'ehav Hashem Yochi'ach" (Mishlei 3:12).
Perhaps this is like R. Bechayei says, that Dibur to Moshe was b'Ispaklaryah ha'Me'irah. This does not apply to human speech. (PF)
Sometimes Hashem's Dibur was only two verses, e.g. Shemos 6:10-12, and Amirah was 19 verses (Shemos 1-20)! Perhaps Dibur was always longer, just the Torah does not record all of it. Or, va'Ydaber shows that Hashem said more than is written, whereas va'Yomer shows that exactly these words were said.