Deuteronomy 13:9

13:9 Instead, you must kill him without fail! Your own hand must be the first to strike him, and then the hands of the whole community.

Deuteronomy 17:11

17:11 You must do what you are instructed, and the verdict they pronounce to you, without fail. Do not deviate right or left from what they tell you.

Deuteronomy 22:1

Laws Concerning Preservation of Life

22:1 When you see your neighbor’s ox or sheep going astray, do not ignore it; you must return it without fail to your neighbor.

Deuteronomy 31:8

31:8 The Lord is indeed going before you – he will be with you; he will not fail you or abandon you. Do not be afraid or discouraged!”