The Truth We Missed

For the past two thousand years, many Christians have passionately focused on the belief that Jesus came to atone for the sins of men. This book shows that Jesus came to testify to the truth (John 18:37), atonement, or redemption is within the truth.
What is the truth? What is the importance of the truth in the work of salvation? How can we know the truth?
Christianity is about the will of the Father to bring man to eternal life (John 6:40).
The truth is the word of the Father with the role to sanctify (John 17:17, 17:19). Jesus did not say any other way to sanctify but by the truth. It is just a theological or philosophical finding if anyone says there is another way to sanctify. Redemption, love, and good deed are not the whole truth, everyone is delaying or failing his salvation if he ignored the truth.
We will know the truth if we continue in Jesus’ word (“my word”, John 8:31), and the truth will make “you” free (John 8:32). We have to open to knowing the truth. The Spirit of truth will be our guide into all the truth (John 16:13).
What is the truth of John 17:3, "this is eternal life, that they may know you, the only true God"?
What is the truth of John 8:24, “for you will die in your sins unless you believe that I am he,” and John 16:9, “about sin, because they do not believe in me”?
What is the truth of this contradiction: “The Father and I are one (John 10:30)”, and, "know with certainty that God has made him both Lord and Messiah (Acts 2:36)"?
What is the truth of this contradiction: “The Father and I are one (John 10:30)”, and, "I am going to the Father, because the Father is greater than I (John 14:28)"?
What is the meaning of the spirit in “God is spirit, and those who worship him must worship in spirit and truth (John 4:24)”? Does spirit occupy space so there’re above and below, left and right, so Jesus “sat down at the right hand of God (Mark 16:19)”?
The above verses taught that knowing the truth is a necessity in the course of the work of salvation, it makes free, it sanctifies, it makes us know the only true God and worthy for eternal life. It is just a theological or philosophical finding if anyone says there is another way to eternal life.
Let’s expand our questions: Where is God during the COVID-19 pandemic? If God didn't create COVID-19, at least why would God let it happen and continue? We know that COVID-19 has now killed more than 1,300,000 people. We should also link that question to the "Spanish flu" a hundred years ago with casualties of between 50 – 100 million people, the Aceh tsunami with more than 100,000 casualties, and many other sad events.