The consequences of fear and distrust in Allah

قَالُوا۟ يَـٰمُوسَىٰٓ إِنَّا لَن نَّدْخُلَهَآ أَبَدًا مَّا دَامُوا۟ فِيهَا ۖ فَٱذْهَبْ أَنتَ وَرَبُّكَ فَقَـٰتِلَآ إِنَّا هَـٰهُنَا قَـٰعِدُونَ

They said, "O Moses, indeed we will not enter it, ever, as long as they are within it; so go, you and your Lord, and fight. Indeed, we are remaining right here."