The Catechism in Questions & Answers

535. What is the significance of the resurrection of Jesus Christ?

The resurrection of Jesus Christ is the foundation for the resurrection of the dead. Since He has resurrected, the dead will also resurrect, “some to everlasting life, some to shame and everlasting contempt” (Daniel 12: 2).

“Behold, I tell you a mystery:We shall not all sleep, but we shall all be changed—in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised incorruptible, and we shall be changed.”
1 Corinthians 15: 51-52