Divrey Hayamim Bais 32:7-8

Chizku (be strong) and courageous, be not afraid nor dismayed because of the melech Assyria, nor because of all the vast army that is with him, for there be more with us than with him. With him is zero'a basar, but with us is HASHEM Eloheinu to help us, and to fight milchamoteinu (our battles). And HaAm took heart upon the words of Chizkiyahu (Yechizkiyahu) Melech Yehudah.