>No one alive at the time of Jesus Wrote about JesusThere is Peter, John and Matthew who were his Apostles
John wrote 5 books of the Bible and knew Jesus personally.
Peter wrote 2 Books and knew Jesus personally.
James, was his brother as was Jude who both wrote 1 book of the bible.
Then there is Clement who is in the Bible who wrote the epistles of Clement and became the 4th Bishop of Rome.
Then there is the 1st century Didache which was written in 49-55AD and was ALSO found in the Dead Sea scrolls which mentions Christ
Luke includes an addresses a person in the first 3 lines of his gospel. He is writing to the most Excellent Theophilus
https://en.wikipedia.org/wiki/Theophilus_ben_AnanusTheophilus was the High Priest in the Second Temple in Jerusalem from 37 to 41 AD.
He was a member of one of the wealthiest and most influential Jewish families in Judaea Province during the 1st century. We know he existed for sure.
So this means that Luke would have had to have written to him before 41 AD when he died.
He says this line
Luk 1:4 That thou mightest know the certainty of those things, wherein thou hast been instructed.
So Theophilus had ALREADY been instructed in Christianity. This proves that Luke wrote about the life of Christ to a man that was a priest during the life of Christ and who is a documented person.
Logic that. Jesus existed