On the other hand for most of the Church it is hard not to believe in the Trinity seeing as we are commanded to baptize in the name of the Father, Son and Holy Spirit, seemingly three separate persons. The hard part is seeing them as One God. It is easy for me because 1 Thes. 5:23 and Col. 2:9 shows how we are one person made in their - God's image. I'm sort of a Trinitarian, but not. A Triunitarian would be more accurate. I see the three as One. You see the flaws in the Trinity, but haven't accepted a triune God which includes Jesus. Even though Jesus was born with a 100% human body, His spirit and soul was 100% God. That affected His body. It could die, because it was human fulfilling the sacrifice because He was sinless within, but see no corruption because He is God.
It is hard for people to see them as One because the three have such different roles, but that is not hard when you realize our mind is different than our brain, but they are inseparable, and the mind is "greater" than our brain. I'm sure you know whose who in that scenario. It is why Jesus said the Father is greater than the Son. For anyone reading this, the mind is the Father who is invisible spirit, and the brain represents our human body who is Jesus. This is why the disciples asked Jesus to "show us the Father." And it amazed Jesus that they still didn't understand, but said "If you have seen Me, you have seen the Father." This is also why 1 Cor. 2:16 tells us who are born again of the Spirit that we have the mind of Christ. Obviously, Jesus meant He had the mind of the Father. The Holy Spirit is the power of God and lives in our conscience/heart.
As far as our "nature," because of Adam's WILLFUL sin (a sin unto death, as opposed to Eve's unintentional sin, a sin not unto death, 1 John 5:16-17) instead of just a clean human nature full of free will, we have inherited part of Satan's nature - a sin nature, and are originally born a slave to sin. This is why all have sinned and fall short of the glory of God. This is why Jesus said, we must be born again. Satan's nature cannot inherit heaven. John 8:32, 34-36. Jesus, the man, was not born with a sin nature because of the seed of the Father. The seed of the Father in 1 John 3:9 is why we cannot commit sins unto death either. The Church could not understand the difference between the two different levels of sin, so added the word, "practice" to verses clearly about sins unto death. Total ignorance. They also deleted other parts of God's Word like the last words of Romans 8:1 and 1 John 5:7. I know you know the difference. That part of all human's current nature - the nature of Satan/the sin nature - is what is born again. Our nature is within. It is our spirit and soul. Only our body will now see corruption, because we are 100% human, including the sin nature we were born with. But the born again's mind of Christ will live on.
Paul's use of the word "flesh" in our English Bibles is talking about the sin nature. That is why Romans 7:5-6 and Romans 8:9 shows we are not in the "flesh" any longer. That usage is not about our body's flesh of bones, muscles and organs. Many false denominations still teach a Christian has a sin nature. To me, that belief is slapping the face of Jesus. It is why Matthew 7:19-23 is about Christians that Jesus never knew. (That applied to be for the first 30 years of going to church).
Do you understand where I am coming from, whether you agree or not?