My friend showed me the source that I mentioned. It’s from the Chidushei Horim and it’s in regards to the Meraglim.
He explains that they wanted to stay in the Midbor was because their Avodas Hashem would be better there, but the Chidushei Horim explains that it is not their business to make a cheshbon like that.
מאחר שהקב”ה ציוה לבוא שמה יהי’ איך שיהי’ אף לירש גיהנם
“Since HKB”H commanded them to go there, regardless of the outcome [they have to fulfill his command] even if the result is going to Gehinnom.”