God can do all things. The devil is a liar. Ask and it shall be given, knock and the door shall be opened. All of these things are part of a verse. Some most remember others have to look up. It is not so important that you remember every line, every verse. God sees your heart. When evil approaches you speak what you know and the devil has to flee. Keep your bible handy. And know that you are never defeated when you have God on your side.
1 Chronicles 16:11 Seek the LORD and his strength; seek his presence continually!