There are many false ideas about Jesus that permeate our society. The "Idea" that he was a myth is one of them.
The accurate view of Him needs to grasped, since so many have been deceived about the person (and work of) Jesus Christ.
The Bible is truly God’s Word, and since God cannot lie, we know that His Word is true. The Old Testament (in great detail) prophesied that Jesus would come, and the New Testament tells us a great deal about His life, ministry, and death.
The myth that "Jesus never actually existed" would be news to the vast majority of historians, both Christian and secular. People who hold to this belief have been called “Jesus Mythers,” but this notion is widely rejected by scholarly historians. Here is what some scholars have written about the Jesus Myth (these statements are not just from conservative Christians—the first four are critical scholars who have rejected the miraculous elements of Christ’s life). Here are a few:
"Of course the doubt as to whether Jesus really existed is unfounded and not worth refutation. No sane person can doubt that Jesus stands as founder behind the historical movement whose first distinct stage is represented by the oldest Palestinian community". (Rudolf Bultmann)
"To doubt the historical existence of Jesus at all … was reserved for an unrestrained, tendentious criticism of modern times into which it is not worthwhile to enter here". (Günther Bornkamm)
"To sum up, modern critical methods fail to support the Christ-myth theory. It has “again and again been answered and annihilated by first-rank scholars.” In recent years “no serious scholar has ventured to postulate the non-historicity of Jesus”—or at any rate very few, and they have not succeeded in disposing of the much stronger, indeed very abundant, evidence to the contrary". (Michael Grant)
"Contemporary New Testament scholars have typically viewed their [i.e., Jesus mythers] arguments as so weak or bizarre that they relegate them to footnotes, or often ignore them completely". (Robert Van Voorst)
Many more of these strong statements against the Jesus Myth could be cited. Why have so many scholars—whether liberal, critical, or conservative—agreed that there is no justification to claim that Jesus never lived? Consider the following facts:
• Matthew (disciple of Jesus): Wrote the Gospel according to Matthew as an eyewitness account about Jesus and His ministry.
• Mark (follower of Jesus): Wrote the Gospel according to Mark as an eyewitness account about Jesus and His ministry.
• Luke (follower of Jesus): Interviewed eyewitnesses and then wrote the Gospel according to Luke about Jesus and His ministry.
• John (disciple of Jesus): Wrote the Gospel according to John, 1 John, 2 John, 3 John, and Revelation, all of which affirm the existence of Jesus.
• Peter (disciple of Jesus): Wrote two letters about Jesus and preached about Christ’s death, burial, and Resurrection just weeks after the events occurred.
• Paul (opponent converted upon meeting the risen Lord): Wrote at least 13 books of the New Testament.
• Josephus (AD 37–c.100, a highly respectable Jewish military leader and historian): Wrote about Jesus on two occasions. The authenticity of one occurrence, known as the Testimonium Flavianum, is hotly disputed, but his account of the execution of James is accepted, and he mentioned James, “the brother of Jesus who was called Jesus Christ.”
• Pliny the Younger (AD 61–c.112, Roman senator): Wrote to Emperor Trajan about his experience with Christians.]
• Furthermore, the Christian faith started in the heart of Judaism (Jerusalem). Right from its beginning just several weeks after Christ’s death, the central message of the church has been the Crucifixion and Resurrection of Jesus. Surely it would be a strange message to tell thousands of people in Jerusalem that just a few weeks earlier they had crucified of an imaginary figure and that this was a major event that people had witnessed.
• It was highly punishable in Jewish culture to give a false account, and to give prophetic message or to say that God said something that, if found to be untrue or if it did not come to pass, was considered to be a great heresy and was punishable by death. This was not out of hate for one another, but out of respect for God, to avoid false claims, to avoid confusion and preserve the integrity of the truth.
(This is, therefore, absolute support of the evidence of the truth of God's words and the existence of Jesus, what he said, and that he was God and rose again after three days). It also shows how seriously they viewed the issue.
Historical research is indeed helpful. Depending on several factors, it can lead to a fairly high degree of confidence about whether certain events actually occurred or whether certain individuals actually existed. But Christians can have more than just a high degree of confidence about these things. We can be completely sure of these events because:
1.) God’s infallible Word (God's own words that he either spoke directly or through his chosen messengers) reveals that Jesus lived, was crucified, and then rose again.
(We know that His messengers and disciples whom God spoke through, the validity of their words all supported/proved each other, they were constantly threatened with their life, often lived very uncomfortable lives--being beaten, starving, being shipwrecked, etc specifically due to their faith and what they were testifying, and the prophecies they spoke of came to pass. Although miracles are seldom now, they were often present with Jesus and sometimes his followers, as a direct and unique sign from God to show that God was with this person and what they were saying was from God and was real).
2.) The historical accounts and evidence, whether written or spoken verbally, are various, accurate, detailed and numerable.
The Bible is not a work of fiction; it is the Word of God, and it is accurate and self proving. It accurately describes how God made the world in six normal-length days, and made man and woman in His image before telling of man’s rebellion against his Creator . . . and then God's intervention personally to save them; as he did this by coming to Earth as human being to die in our place. Jesus paid the penalty for our sins so we could be forgiven and restored to a right relationship with God, (because the result of sin and turning away from God is death), which God never wanted for us (John 3:16).
Jesus predicted His own death and burial (Matthew 12:40) as did the Old Testament prophets hundreds of years earlier (Isaiah 53:8; Daniel 9:26). He even predicted that He would rise from the dead (Matthew 20:17–19) and said that His Resurrection would be the one miraculous sign He would perform for unbelievers (Matthew 12:38–40). In fact, the Apostle Paul told the philosophers in Athens that God furnished proof of the message he preached by raising Jesus from the dead (Acts 17:31).
The New Testament writers did not concoct these events in their minds. Instead, being guided by the Holy Spirit, they infallibly recorded history. Most of them died a martyr’s death, thereby verifying the truth of their written testimony. As a result, the whole world can know of the Lord’s marvelous deeds and be warned of His coming judgment. All who reject Him will suffer the eternal consequences for their sin, because to reject Jesus means to accept God's/our enemy Satan. Those who turn from their sin (repent) and call on Jesus to save them will be forgiven and spend eternity with their Creator.
All of this, and more, verifies that the Bible and Jesus Christ are/were very real.