Consider the bitachon of Am Yisrael when they left Mitzrayim and went into the desert. They left with only a little matzah and no other provisions, but they did not question the ways of Hashem and did not say anything; they trusted Hashem entirely to care for them in the wilderness.
If you want to see this written in the Torah, see what Yirmeyahu said about those who left Mitzrayim: “Go and call in the ears of Yerushalayim, saying, “Thus says Hashem: I remember for you the kindness of your youth, the love of your nuptials, your act of following Me in the desert in a land unsown” (Yirmeyahu 2:2).
Therefore, Hashem rewarded Am Yisrael and consecrated them, distinguishing them from the other nations of the world. Just as anyone who eats from holy terumah invokes the death penalty, anyone who hurts Am Yisrael becomes deserving of death from Heaven; as it says (Yirmeyahu 2:3), “Am Yisrael is holy for Hashem.”
(based on Tanna D’vei Eliyahu ch. 17)
