2 Chronicles 32:7-8
Be strong and courageous, be not afraid nor dismayed for the king of Assyria, nor for all the multitude that is with him: for there be more with us than with him: With him is an arm of flesh; but with us is the LORD our God to help us, and to fight our battles. And the people rested themselves upon the words of Hezekiah king of Judah.
When God is on our side, we do not have to be afraid regardless of how big our enemy seems. God is bigger than the biggest army. He is stronger than the strongest men. It doesn't matter if they come at us with things of this world, God is our help and will fight for us. We can rest in God.