For it was of the LORD to harden their hearts to engage Israel in battle, so that they would be set apart for destruction and would receive no mercy, being annihilated as the LORD had commanded Moses.
Jewish Publication Society of America Version (JPS1917) - Joshua 11:20 >For it was of the LORD to harden their hearts, to come against Israel in battle, that they might be utterly destroyed, that they might have no favour, but that they might be destroyed, as the LORD commanded Moses.