Paul declared to the believers in Corinth that no one can say Jesus is Lord except by
Answer Details
In 1 Corinthians 12:3, Paul declares that "no one can say, 'Jesus is Lord,' except by the Holy Spirit." This means that confessing Jesus as Lord is not merely a matter of uttering the words but is a spiritual act that requires the help of the Holy Spirit. The Holy Spirit gives us the faith and revelation knowledge we need to understand and confess that Jesus is Lord. Therefore, the correct answer is 'the Holy Spirit'.