What Elisha’s assistant saw when he looked out his door was the huge army of the enemy Arameans, “with troops, horses, and chariots everywhere.” Elisha asked God to open his assistant’s eyes so he could see that there is more happening than meets the eye. “... there are more on our side than on theirs!”
You may look at your situation, whatever it is, and think you are facing an impossible opponent. You might feel like giving up. What God wants to do is get us to the place where we will open our eyes and see that he is up to something. Things are not always as they seem.
Our real enemy, Satan, wants us to give up. He will tell us lies and half truths. He will tell us that the reason the person is oppositional towards us is because they are an idiot and beyond hope, so you shouldn’t even bother trying.