How were the people of lystra mistaken after paul and barnabas helped the lame?
While preaching in Lystra, Paul and Barnabas encountered a crippled man who they recognized had faith to be healed. Paul told him to stand up, and for the first time in his life the man walked. The people of Lystra saw this miracle and declared that Paul and Barnabas were gods who had taken on human form. They believe that Barnabas was the Greek god Zeus and Paul was Hermes. The priests of the town prepared to make sacrifices to the two apostles until Paul and Barnabas, realizing what was happening, desperately declared that they were indeed mere humans and that the miracle was due to the power of the living God.
See Acts chapter 14, verses 8-20 of the Bible.