Addressing the Jewish people toward the end of his life, Moshe reminds them of the grandeur of G-d’s choice of the Jewish people:
“G-d has selected you this day to be His treasured people, as He spoke to you, and so that you shall observe all His commandments, and to make you supreme, above all the nations that He made, [so that you will have] praise, a [distinguished] name and glory; and so that you will be a holy people to your God, as He spoke.” (Devarim 26:18-9)
Rashi highlights the two phrases which Moshe attributed to an earlier statement by G-d, “as He spoke to you,” and provides the source for each:
[G-d has selected you... to be His treasured people] As He spoke to you: [When He said]: “And [out of all the nations,] you shall be to Me a treasure.” (Shemos 19:5)
And so that you will be a holy people... as He spoke—[When He said]: “And you shall be holy to Me.” (Vayikra 20:26)
