One interesting example is Josephus. A Jewish-Roman historian, he provides almost the only roughly contemporary mention of Jesus outside of biblical ones (and biblical apocrypha). He simply describes the existence of a 'superstition' (non-officially accepted religion) around Jesus, that he was crucified, and that his followers still venerated him.
Sometime in the last 2000 years, probably the Early Middle Ages, Christian scholars doctored this passage to have Josephus suggest that Jesus was a god, or at least superhuman (even though Josephus was not a Christian believer).
Modern scholarship, including religious scholars, almost unanimously accept the passage as fake. But Christian proselytizers still use it very frequently as extra-biblical confirmation of the divinity of Christ.
Sometime in the last 2000 years, probably the Early Middle Ages, Christian scholars doctored this passage to have Josephus suggest that Jesus was a god, or at least superhuman (even though Josephus was not a Christian believer).
Modern scholarship, including religious scholars, almost unanimously accept the passage as fake. But Christian proselytizers still use it very frequently as extra-biblical confirmation of the divinity of Christ.