From Candles in the dark by Amy Carmichael, page 32.
We are not called to be weaklings but warriors. So let no one be surprised when the enemy comes in like a flood. But there is no need ever to be overwhelmed. There is not one word in the Bible to tell us to expect to be overwhelmed, for the moment the enemy comes like a flood, that very moment the Spirit of the Lord lifts up a standard against him (Isaiah 59:19) and makes us strong to endure as seeing Him who is invisible.
I don't want to waste my resources, my strength, and my strategies fighting the wrong opponents.
Satan, Lucifer, the wicked one who hates me and everything I love is out to get you, Little One. Remember that. He will do whatever it takes to hurt me and that includes destroying you and every person I love.
But be encouraged, Little One. I won't let him destroy you. Though I am not "visible" to you I am with you. I will be your point man. I will be your air support. I will be your rear guard. I will fight your battles for you.
If you will simply step aside in trust and let me.