THIS MIGHT SURPRISE YOU
The answer
Mark 6:5 — "he could do no deed of power there," apart from laying hands on a few sick people, and he was amazed at their unbelief. Matthew's telling of the same visit reads "did not do many deeds of power" (Matthew 13:58). Luke's Nazareth scene ends differently again, with the crowd driving him out of town.
Why it’s interesting
One word apart — "could not" against "did not" — and both tellings sit in every Bible printed. Scholars who hold that Matthew used Mark read the softened wording with interest; the texts themselves simply stand side by side.
Scholarly consensus
You can know the Bible.
Not just the stories, but the history, authorship, and scholarship behind it.