In the book of Genesis, Adam committed the first sin. At that time the spirit of Adam was dead. God said that Adam would die if the fruit of the tree of the knowledge of good and evil was eaten. Since Adam did not physically die, and the mind of Adam was still functioning, that would leave the 3rd part of Adam, his spirit, to die. God made man a spirit, a soul(mind, will, and emotions), and a body. All mankind inherited from Adamecause all mankind was contained in Adam. Because of that first sin, Adam deserved to die completely, in spirit, soul, and body. But God wanted children, and wanted to have a relationship with mankind.He could not have an intimate relationship with mankind because of their sin nature. Mankind started committing sin because they were sinners by nature. The more mankind sinned the more they deserved to receive punishment and be subjected to the wrath of God. God and mankind became enemies and there was no peace between them.
How could God clean up this mess so that He could have children and have a spiritual relationship with mankind? A perfect offering could be offered up to God for the sins of mankind, but there was not a perfect offering to be found among mankind, for all had sinned and come short of the glory of God. Mankind thought they could be "good enough" to obtain God's forgiveness. God then gave people His Ten Commandments, through the Israelites, to show them that His standard of righteousness far exceeded anything mankind could ever achieve. Mankind needed a saviour.
Jesus was the Saviour, the only begotten Son of The Father. Jesus became God in the flesh, the God-man, both God and human. Jesus lived a perfect life and committed no sin. He was the only man who ever lived who was found among mankind to be perfect. Jesus became the perfect sacrifice needed to be offered for the forgiveness of all of mankinds sin. He suffered/took the wrath of God for all mankind. He took stripes on His back for our healing from all the diseases and ailments of mankind.He died and and was buried and took all the sins of mankind and buried them with Him. He rose from the dead, and is now seated at the right hand of God.
God declared that anyone who believed on the Jesus would be saved from eternal death and receive eternal life. We would be called believers. The righteousness of Jesus would become our righteousness and we would be "born again" with a new spirit. The old spirit would be done away with and mankind would not be a sinner any more. In our new spirit we would have everything that Jesus had while here on earth, and everything He inherited in from the Father in heaven. We could live by everything Jesus lived by, but we had to renew our minds. Our minds had sin habits that had to be done away with. Believers no longer had a sin nature but the Nature of God within them. God could now inhabit a believer and have an intimate relationship with a believer. Jesus and the Holy Spirit also took up residence within a believer. A believer actually walks with God in them which is something God could never do before. Believers have become new creatures which the earth has never seen before. We may look plain humans on the outside, but we are sons and daughters of God on the inside, with the nature of God. God, through Jesus, saved believers from certain death and destruction, which unbelievers deserve, and raised them to eternal life in Jesus and with the Father.
In the name of Jesus I bless you with the life of God, and with understanding and wisdom. Thank you Jesus.