The universe is sufficient unto itself.
It does not need an outside tinkerer to do anything.
Can anyone prove otherwise?
I didn't think so.
Argument from personal incredulity, as in the OP, is not an argument. It is just an expression of emotion.
Guess what? Even non-human animals have emotions.
Move along, people. Nothing to see here.
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Such is the foundational tenet of Naturalism: there is no need of a God to explain what happens in the natural world we are in.
Naturalism clearly claims no observation of any Life or Power above the natural we commonly observe around us.
Naturalists state that modern man is the highest intelligence, the pinnacle of understanding existence. It is what man has come to learn through science that concludes what this physical life is about.
So states Naturalists.
They are not wrong nor deceived. There is no Higher Life in our midst nor life after death. There is no evidence of a Creator nor any revealed purpose for this Creation from Him.
If there is a Creator, then He is nowhere to be found.
So state godless men, men without God in this present world. Men who lean on their own understanding and five senses. When presented anything about a God existing and at work from on High in our midst, even the Kingdom of God ruling over the natural, even this universe being an intelligent design, Naturalists declare all such to be from ignorance, superstition, bias confirmation, imaginary in substance, and unscientific, lacking any evidence.
Naturalists have put themselves in the lofty position to call all the shots, to have the final authoritative say, and blatantly proselytize others to their world view for the sake of promoting good and reality.
Even though I grew up as one, and received formal education in the natural sciences, I found Naturalism to be erroneous. I found Naturalism to be no more than a dust-level view of life and the cosmos we live in. I found Naturalists to be full of unbelief towards Him on High, having zero apprehension of Him at work in our midst, and His amazingly intelligent work in Creating the natural world.
By meeting Him, even through His Spirit, even by being born of the Spirit, I have found Naturalists to be in Spiritual Poverty and void of His Spirit at work in man.
It was through seeking Him and finding Him, even experiencing the Baptism of the Holy Spirit, as stated in the Bible, that I became firsthand aware of Him on High, and through the Baptism of the Holy Spirit that I started communion with Him.
It was within His intentions to also allow me to see Miracles among us, where His Power Rules over the natural in no uncertain way.
Through these things He has allowed me to firsthand understand Naturalists, Naturalism, and Scientism as a manmade modern religion - a naturalistic only way of living and believing, ignorant of the spirit we have within us. I have seen how He is always in our midst watching everything we do. I've seen the error I have walked in as a godless earth scientist, how to be blind to Him who is in our midst, even to base existence on the five senses and say that this is all we have to discern with, and all there is to life.
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