Ezra 8:21-23

Then I called for a fast there at the Ahava River so that we might submit before our God and ask of him a safe journey for ourselves, our children, and all our possessions. I had been ashamed to ask the king for a group of soldiers and cavalry to help us in facing enemies on the way, because we had told the king, “The power of God favors all who seek him, but his fierce wrath is against all who abandon him.” So we fasted and prayed to our God for this, and he responded to us.