Certain passages in the Bible seem to support Dualism, while others seem to support Materialism.
Definitions of Dualism and Materialism: I do not know where I pasted this from, but as curiousdanni says it is word for word the same as Wikipedia, which I do not use since it is open to editing by anyone.
Dualism is the concept that our mind is more than just our brain. This concept entails that our mind has a non-material, spiritual dimension that includes consciousness and possibly an eternal attribute. Materialism holds that everything in our universe is made from physical materials including the human mind or brain and that spiritual attributes do not exist in the universe. This concept holds that our mind and brain are one and the same.
Examples in Scripture:
John 9:39 KJV
And Jesus said, For judgment I am come into this world, that they which see not might see; and that they which see might be made blind.
Matthew 13:13 KJV
Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.
Matthew 13:14 KJV
And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive:
Matthew 13:15 KJV
For this people's heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.
As I read these Scriptures Jesus is using parables to awaken the Spiritual consciousness of those he is addressing.
And in the following Scriptures he is telling his disciples that they have all of the material evidence they need, Since everyone knows how the human body processes food, and since he took a small amount and fed a multitude. Thus he was proving his deity with all of the material evidence necessary and there was no need for Spiritual understanding.
Matthew 15:17 KJV
Do not ye yet understand, that whatsoever entereth in at the mouth goeth into the belly, and is cast out into the draught?
Matthew 16:9 KJV
Do ye not yet understand, neither remember the five loaves of the five thousand, and how many baskets ye took up?
In John 9:39 and Matthew chapter 13 it appears to me that Jesus is hinting that there is a Spiritual component to Understanding Heavenly things, yet in Chapters 15 and 16 of Matthew it appears that he is saying that they should know from just what they have seen.
Is it possible that materialism is for Earthly knowledge, and Dualism is necessary for Heavenly knowledge?