'By the Sword' in the Bible

Why is the Lord bringing us into this land to die by the sword? Our wives and little children will become plunder. Wouldn’t it be better for us to go back to Egypt?”

The Amalekites and Canaanites are right in front of you, and you will fall by the sword. The Lord won’t be with you, since you have turned from following Him.”

Anyone in the open field who touches a person who has been killed by the sword or has died, or who even touches a human bone, or a grave, will be unclean for seven days.