do not quarrel

Possible meanings include 1) "do not argue" and 2) "do not become afraid"

went up out of Egypt

It was common to use the word "up" when speaking of traveling from Egypt to Canaan.

Here "land of Egypt" stands for the people of Egypt. AT: "he rules all the people of Egypt" (See: rc://en/ta/man/translate/figs-metonymy)

Here "heart" stands for the whole person. AT: "and he was astonished" or "he was very surprised" (See: rc://en/ta/man/translate/figs-synecdoche)

"he did not accept that what they said was true"