You must believe The Gospel in order to be included in the Rapture.

1Corinthians 15:1-4 "Moreover, brethren, I declare unto you the gospel which I preached unto you, which also ye have received, and wherein ye stand;

By which also ye are saved, if ye keep in memory what I preached unto you, unless ye have believed in vain.

For I delivered unto you first of all that which I also received, how that Christ died for our sins according to the scriptures;

And that he was buried, and that he rose again the third day according to the scriptures:"