Do not be afraid

Do not be afraid. That encouragement is indeed in The Bible in the Book of 2 Chronicles 20: 15 which reads: " Do not be afraid or be terrified because of this large crowd, for the battle is not yours but God's."

That advice was given in the context of the neibouring nations that was threatening Judah.

2 Chronicles20: 1-30 outlines that cry for help was done by Jehoshaphat in his prayer to Jehovah God and was answered by him, who saved Judah miraculously.