If he, Christ, suffered delusions, he would certainly not be wise. But, if Jesus wasn't delusional and if what he said was wise, and if what he claimed about himself was true, and if people observed his miracles, death, burial and resurrection, if that is true and he is a wise teacher you must also consider Jesus to be the son of God. And, if you assume him to be the son of God his attributed divinity destroys the insanity claim because one cannot be both perfect and insane.
1 Cor. 15:3-4 is implied by many scholars to be a very early creed of the Christian church. A creed is a statement of belief. In 1 Cor. 15: 3-4 we see that Paul says he received this information. The text reads,
"For I delivered to you as of first importance what I also received, that Christ died for our sins according to the Scriptures, 4and that He was buried, and that He was raised on the third day according to the Scriptures, 5and that He appeared to Cephas, then to the twelve." (1 Cor. 15:3-5, NASB)."
In Jesus days, it was Jewish "history" to tell and retell the same events and pass down for generations. But, with Jewish tradition, they were very careful to keep the details in their stories. The people during Christ time didn't write things down and take notes etc., it wasn't like that. When you ask for historical 'evidence or facts' they wouldn't know what you mean, as the word "history" is only three hundred years old. Furthermore, 1 Corinthian, written roughly seven years after Christ's death by the Apostle Paul, is the core of the Christian faith. "For I delivered to you as of first importance what I also received, that Christ died for our sins according to the Scriptures, 4and that He was buried and that He was raised on the third day according to the Scriptures, 5and that He appeared to Cephas, then to the 12," (1 Cor. 15:3-5, NASB).
As to the claim, the Gospels were written hundreds of years after Christ isn't true. The first Gospel, Mark, was written less than 40 years after Christ crucifixion. Jesus most likely died around 33 A.D. The Gospels do not mention the destruction of the Temple of Jerusalem by the Romans in 70 A.D. That indicates the Gospels were written before the destruction o
f the temple. Mark, the first of the Gospels authorship is from 55-70 A.D.
However, keep in mind the early Christian knew of the resurrection, believed and shared the Gospel with all who would listen. To whom He also presented Himself alive after His suffering by many infallible proofs: Jesus also established the fact of His resurrection with many infallible proofs during the forty days after his resurrection but before His ascension. He left no possible doubt that He was resurrected, exactly as He had promised.
Here, Paul Explains On Infallible Proof of Christ's Resurrection.
1 Corinthians 15:6 Paul described one of these many infallible proofs: He was seen by over five hundred brethren at once, of whom the greater part remain to the present. More than 500 people saw the resurrected Jesus, and most of them were still alive some 25 years later in the days of Paul’s ministry.
It is true, many people claimed to be Christ, even during Christ's time, this is correct. However, in the end, they showed themselves to be false etc., But, Jesus was different, his miracles and such so obviously unremarkable about Christ, and that for centuries later people believe his claims. The 12 apostles died for Christ, not they died not only for their faith in Him but they physically encounters/saw him. 12, people in separate parts of the world don't die for a lie. Horrible deaths to include being whipped to death, burned alive, beheaded, crucified upside down, crucified sideways, hanged, and other disturbing deaths the 12 died because they wouldn't recant their attributed divinity to Christ.
"There is a hypothetical "Q" document. One of the early church fathers said that Matthew jotted down saying of Christ as he traveled with Him, not in Greek but his native language, Aramaic. We know his Gospel was written most likely at Antioch and written in Greek. This "Sayings of Jesus," written in Aramaic, may have been a common source for the Gospels. Those who can read Greek see changes in style in sections of the Gospels, and can reconstruct these sections to propose a source used by all three of the Synoptic Gospel writers, Matthew, Mark and Luke (particularly Matthew and Luke)."(1).
Paul Preaches the Importance of Christ's death, burial and resurrection.
"1 Now, brothers, I want to remind you of the gospel I preached to you, which you received and on which you have taken your stand. 2By this gospel you are saved, if you hold firmly to the word I preached to you. Otherwise, you have believed in vain.
3For what I received I passed on to you as of first importance: that Christ died for our sins according to the Scriptures, 4that he was buried, that he was raised on the third day according to the Scriptures, 5and that he appeared to Peter, and then to the Twelve. 6After that, he appeared to more than five hundred of the brothers at the same time, most of whom are still living, though some have fallen asleep. 7Then he appeared to James, then to all the apostles, 8and last of all he appeared to me also, as to one abnormally born.
1 Corinthians 15:1-8"
Some say you have to take belief in God off "faith" while that's partially true; it is also true that no one can not have faith. We all have different objects and degrees of faith, but it is faith nonetheless. Some imply faith isn't reasonable. However, taking things off faith is something we do daily, and it comes rather naturally. Believing in one thing or another and attributing faith to it is instinctual in nature. However, the object of that faith is disputable. The degree of faith attributed to an object of faith is questionable. So, if Jesus is who he claimed to be, Christ is a reasonable and rational object of faith. If Christ's divinity is worthy of the object of personal faith, it becomes as much worthy of faith as it is the truth.
1). Dr. w. EuGENE SCOTT (Ph.D., Stanford University). THE RESURRECTION.
Preached at the Los Angeles University Cathedral.Why the Resurrection is the Cornerstone of our Christian Faith.http://www.resurrectionism.com/index.html
2).Matt Slick. (September 2014).When Were The Gospels Written and by Whom? Carm.http://carm.org/when-were-gospels-written-and-whom