Above all things, be strong and harden thyself, to observe and to do according to all the laws which Moses my servant commanded thee. Turn there from neither to the righthand, nor to the left: that thou mayest have understanding in all thou takest in hand.

For it was of the LORD to harden their hearts, that they should come against Israel in battle, that he might destroy them utterly, and that they might have no favour, but that he might destroy them, as the LORD commanded Moses.