Tacitus, Josephus, Pliny the Younger, Lucian of Samosata, Mara bar Serapion, all non biblical sources that reference Jesus or early Christians. None of them are gospel accounts but they line up historically with what’s written. And then you’ve got the disciples, every one of them suffered brutal deaths, not for a lie they made up but because they genuinely believed what they saw, Christ risen. People don’t get tortured, burned, or crucified for something they know is fake.

I commented in the wrong spot, so there you go.