1 Corinthians 15:51,52,58
51 Behold, I tell you a mystery: We shall not all sleep, but we shall all be changed
52 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…
58 Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord,
knowing that your labor is not in vain in the Lord.