"Or how can one enter a strong man's house and plunder his goods, unless he first binds the strong man? Then indeed he may plunder his house(Matthew 12:29)."
In new age literature, there is something described as a `walk-in.' A `walkin' is a spirit that `walks' into your body. `Channeling' is when you're supposedly `channeling' a spirit, a ghost, an angel, or perhaps `your spirit guide.'
Don't be deceived by these ideas. A `walkin' is the same thing as possession. Even if someone calls it a consciousness instead of a spirit, it is possession by a spiritual entity. The word `channeling' implies control, but this is deceptive. A person who `channels' is not channeling, but instead *being channeled* by the spiritual entity.
Atheists believe that these things are purely the creation of your mind. They think `channeling' is just something you make up out of your own imagination. They think possession is strictly a problem with brain chemicals. They refuse to even consider that there could be spiritual forces acting on brain chemicals. They don't believe that people have souls, and they don't believe that spirits can put ideas in people's heads, ideas that don't even sound like their thoughts, or even that evil spirits can brainwash them. They don't believe spirits can make people do things that they don't have any natural inclination to do, or to create in them desires to do things they don't want to do. To even harm themselves.
But possession happens. True, there are mental disorders, but an evil spirit can aggravate these disorders to make them worse. That's why Ouija boards are not playthings.
Your body and your mind are like a house. You are in it, but without the strong man, Jesus, in your heart, this house is open for invasion. The only spirit you should let in this house is the Holy Spirit of God. Only let the triune God `channel' you. Only let God be your spirit guide. All other spirits are lying demons. Test the spirits with God's word to make sure you've got the right one on your side.
Dear Jesus, please be my guide and my strength. Guard my heart, my mind and my soul, and do not let me be deceived by other spirits. Amen.