Sforno on Numbers 14:3/ספורנו על במדבר י״ד:ג׳

1ולמה ה' מביא אותנו, what sin did we commit against Him that He made the effort to bring us to this crisis by using you two as His instruments? They thought that these present troubles were all retribution for the abominable things they had been doing while in Egypt, or on account of some other cause they were not aware of which had caused G’d to hate them. We know that they had concluded that G’d must hate them from their own words in Deuteronomy 1,27: “because G’d hates us He took us out of Egypt in order to deliver us into the hands of the Emorite.”