'Be Accursed' in the Bible

If anyone does not love the Lord [does not obey and respect and believe in Jesus Christ and His message], he is to be accursed. Maranatha (O our Lord, come)!

But even if we, or an angel from heaven, should preach to you a gospel contrary to that which we [originally] preached to you, let him be condemned to destruction!

As we have said before, so I now say again, if anyone is preaching to you a gospel different from that which you received [from us], let him be condemned to destruction!