'Fatal' in the Bible

The Lord says, "Yes indeed, I am sending an enemy against you that will be like poisonous snakes which cannot be charmed away. And they will inflict fatal wounds on you."

But I have not run away from being Your shepherd,and I have not longed for the fatal day.You know my words were spoken in Your presence.

You are making a fatal mistake. For you sent me to the Lord your God and asked me, 'Pray to the Lord our God for us. Tell us what the Lord our God says and we will do it.'