Paul's writings are Dated to 55 AD Based on an Archaeological Finding

1 Corinthians was written in 55 A.D. We can date when Paul was in Corinth by the inscription in Delphi of Greece. Gallio was the procouncil in Corinth. We can trace all of Paul's writings to that archaeological discovery. Look at 27:00 by Frank Turek.

The creed in 1 Cor. 15 is pre-40 AD. Nothing in antiquity has reference points this close to their events, thus, holding to the higest of standards for ancient literature. If you look in John or Acts there are details recorded which only John or Luke could have known as eyewitnesses or had known the eyewitnesses. Church fathers are quoting from the NT in the 1st century. There's also a commentary written in the first century about what went down. In fact, someone noted you can quote the entire NT except for 11 verses from the earliest church fathers.

https://www.youtube.com/watch?v=zSqb5Q8zjx4

[Act 18:12-17 NLT] 12 But when Gallio became governor of Achaia, some Jews rose up together against Paul and brought him before the governor for judgment. 13 They accused Paul of "persuading people to worship God in ways that are contrary to our law." 14 But just as Paul started to make his defense, Gallio turned to Paul's accusers and said, "Listen, you Jews, if this were a case involving some wrongdoing or a serious crime, I would have a reason to accept your case. 15 But since it is merely a question of words and names and your Jewish law, take care of it yourselves. I refuse to judge such matters." 16 And he threw them out of the courtroom. 17 The crowd then grabbed Sosthenes, the leader of the synagogue, and beat him right there in the courtroom. But Gallio paid no attention.

https://en.wikipedia.org/wiki/Acts_18#Verse_12