'Fail' in the Bible

No man will be able to stand before you all the days of your life. As I was with Moses, so I will be with you. I will not fail you nor forsake you.

Joshua said, "Hereby you shall know that the living God is among you, and that he will without fail drive the Canaanite, and the Hittite, and the Hivite, and the Perizzite, and the Girgashite, and the Amorite, and the Jebusite out from before you.

Now therefore you are cursed, and some of you will never fail to be bondservants, both wood cutters and drawers of water for the house of my God."