http://agapegeek.com/2011/01/21/understanding-satan%E2%80%99s-abilities-can-satan-readyour-mind/
This is an interesting read on the subject and challenged my thinking on what I believed. I have officially switched view on the subject! I am still weary and cautious and will warn everyone to guard your thoughts, which is the key. I think communication is possible but only when you are willing.
Just a small portion that explains how I was confused.
2Corinthians 10:5
5
We are destroying speculations and every lofty thing raised up against the knowledge of God, and
we are taking every thought captive to the obedience of Christ,
This is a fairly popular verse of scripture that you should already be aware of. But, since we are speaking about the realm of the mind and the origination of thoughts let’s examine what God is saying. We can see that God is speaking to us to do something. God tells us to “Cast Down” imaginations. Then God says to “Make Captive” every thought. Two aggressive actions that we are required to take based upon what? If you read the context of this verse you can see that God is again describing a spiritual warfare that is taking place. This means you must interpret this verse within the context of spiritual warfare and this is how you fight against your spiritual enemy Satan. Where do these thoughts and imaginations come from that you are to “make captive” and “cast down”? They must come from Satan, otherwise if they were from God we would not need to do anything but follow His leading. We can assume by indirect reference that the source of these things in our mind that are not supposed to be there are from Satan and it is our responsibility to police them out.
It is also obvious to me that if Satan puts these thoughts in there then he knows what you are thinking at that instance. But, he is waiting to see what you do with the thought to see if it worked or not.
1Corinthians 2:6-8
6 Yet we do speak wisdom among those who are mature; a wisdom, however, not of this age nor of the rulers of this age, who are passing away;
7 but we speak God’s wisdom in a mystery, the hidden
wisdom which God predestined before the ages to our glory;
8
the wisdom which none of the rulers of this age has understood; for if they had understood it they would not have crucified the Lord of glory;
Here in 1 Corinthians, God further confirms what I just said. This verse clearly says that if Satan would have known why Jesus was here, he would not have had Him crucified. Satan does not understand acts of love; God who is Love, so loved the World that He gave Himself for us. These are several concepts that Satan does not understand. We know that God’s ways are not our ways according to Isaiah 55:8, but we can also clearly see and understand that God’s ways are not Satan’s ways either or Satan would have understood the plan of God and countered it with more effectiveness.
So while the Bible does not have a direct verse that says Satan cannot read your mind, you have to find out what the Bible does say on the subject and put the pieces of the puzzle together to understand what he can do. We can clearly see that Jesus walked the face of the earth for 33 years and that at no time could Satan read His mind and find out why He was here. If you believe that Jesus was a man like yourself, then you have to conclude that Satan can't read your mind either.
So the subject is a very complex one that is probably difficult for many to grasp. I tell you that Satan cannot read your mind directly, but in the same lesson I tell you that he can give you thoughts to think on and that he knows what he said to you...
Read the whole article for the best understanding!
Shalom!