You do not need to fear arrows that fly during the day. Our fears which terrorize us during the night can just seem to be worrying thoughts in the daytime. But again the Lord says we have no reason to fear. They cannot even find you!
He will cover you with his feathers. Does the picture of God as a mother hen disturb you or encourage you? When a hen takes her chicks under her wings, they are completely hidden from sight. Can you imagine yourself hidden in that safe, comfortable, warm place?
Jeroboam was an evil king, and during his reign many abominations happened, (1 Kings 12) but the Lord had a plan to put things right, and he sent this unnamed prophet to foretell what would happen 300 years later. In the next verse the prophet declared that the altar would split apart as a sign that this word was from the Lord. Read the rest of the chapter and see that this did happen immediately in front of Jeroboam who lifted his hand to arrest the prophet, but his hand withered and would not move!
EN 
FR