1 Corinthians 15:51–58 (DARBY)

51  Behold, I tell you a mystery: We shall not all fall asleep, but we shall all be changed, 52  in an instant, in the twinkling of an eye, at the last trumpet; for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed. 53  For this corruptible must needs put on incorruptibility, and this mortal put on immortality. 54  But when this corruptible shall have put on incorruptibility, and this mortal shall have put on immortality, then shall come to pass the word written: Death has been swallowed up in victory. 55  Where, O death, is thy sting? where, O death, thy victory? 56  Now the sting of death is sin, and the power of sin the law; 57  but thanks to God, who gives us the victory by our Lord Jesus Christ.

58  So then, my beloved brethren, be firm, immovable, abounding always in the work of the Lord, knowing that your toil is not in vain in the Lord.