I have seen a number of blogs warning about the fact that many adult colouring books depict mandalas. These are “spiritual and ritual symbol in Indian religions, representing the universe. In common use, mandala has become a generic term for any diagram, chart or geometric pattern that represents the cosmos metaphysically or symbolically; a microcosm of the universe.” (Wikipedia).
These blogs warn that the act of colouring these in can put the Christian in a meditative state in which they are receptive to demonic influence.
There is some truth in this. Before becoming a Christian in 1978, my background was the Occult and Psychic Phenomena. Part of this included the use of complex patterns, sigils, and black mirrors in order to form a psychic conduit.
Now I am not claiming to be some kind of demon buster, ghost hunter exorcist, I have gained some knowledge from my attempts to understand my own experiences.
You can put most of what I have to say, now, as opinion and no more. That is fair. However, they may provide some insights for you to come to your own conclusions.
It seems to me that we have two channels that connect us to spiritual forces; Faith and Fear.
It is the faith channel that allows God to reach us, and activates many of the Spiritual Gifts. For instance, you cannot heal someone unless your faith tells you that you can. Also, faith allowed some objects to be used in miracles.
The fear channel is the conduit used by divination and superstition. It can cause a person to be enslaved to supernatural forces. The fear channel is also involved when demons are attracted to a person experiencing extreme emotion, especially negative emotion.
There is also a negative version of the faith channel, which allows a person or entity to subvert another person's will. Some drugs can induce this, so can some people using techniques based on glama, where the mind is so confused it becomes suggestible (Used by conmen, some hard salesmen, cult recruiters and so on). Hypnosis and some meditation techniques can also do this. The person becomes susceptible to who (or what) they have surrendered to.
So, how do these apply to colouring books and mandalas? If they do put the person in a susceptible state, the negative faith applies. However, the fear channel may also apply.
Over the years, I have encountered people and situations where demons have (or seemed to have - not everything that seems demonic is demonic) used record covers, stains on the wall, strange smells and countless other media. To a susceptible mind, anything can be a channel.
So, what form does this demonic attack take?
Actual possession is very rare. The usual consequence is known as demonisation. In fact, this is going on all the time to everyone.
The Bible tells us that demons are fallen angels. There are many categories of angels, but the vast majority are messengers (the meaning of angel). They carry out this function by planting thoughts and images in our minds. They also cause emotion-laden dramas to play out in our heads.
This is our spiritual battlefield - our own minds. This is where we encounter the enemy, equipped with the Armour of God. This is where we use our Spiritual weaponry.
If you want to see the truth if this, consider your thoughts. Where did they come from? You could put it down to the subconscious, but what, exactly, is the subconscious, and how does it seem to come up with notions, thoughts and ideas that our conscious mind does not?
So, what is a Christian to do?
Firstly, close that fear channel. He that is in you is greater than he that is in the world. God holds the Universe in His Hand, yet is aware of every hair on your head. Demons are less than bacteria before Him.
Do not give Satan credit for every problem. Sometimes what you perceive as a problem is an opportunity for God to be glorified in your life.
Second, live a consecrated life. Everything you have and are is part of God's plan for you. His desire is that you have an abundant and fulfilled life. Tell God to do what He wants in your life. Ask Him to cause you to speak and act according to His Will (Jesus had to do this, how much more so us?). Ask Him to destroy anything in you that resists or opposes His Will. This is acknowledging that we are not our own, but bought with a price. It is also acknowledging that God designed and created us for this specific time and place, for His Glory and Purpose.
Third, realise that God is the only one who knows you and what you are capable of. Letting Him have His way will allow you to find out what your life is about than stumbling blindly through life or trusting self-styled experts.
Fourth, realise you are now in a position of power. The Bible says that, if you submit to God and resist the devil, he will flee from you. Take authority over your thoughts, especially the dramas (replaying old hurts or future encounters).
Finally, be aware of how the enemy attacks, but do not be fearful (equally, do not be arrogant about them). Realise the protection, power, and authority that God gives you. Do not expose yourself needlessly to possible channels of attack, but do not fear them either. In all things, God makes you more than a champion.