Read Numbers 14:43 Using Other Translations
For the Amalekites and the Canaanites are there before you, and ye shall fall by the sword: because ye are turned away from the LORD, therefore the LORD will not be with you.
For there the Amalekites and the Canaanites are facing you, and you shall fall by the sword. Because you have turned back from following the LORD, the LORD will not be with you."
When you face the Amalekites and Canaanites in battle, you will be slaughtered. The LORD will abandon you because you have abandoned the LORD .”