1 Corinthians 15:52

in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we will be changed.

1 Thessalonians 4:16

For the Lord himself will descend from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first.

Treasury of Scripture Knowledge

Summary

Speak unto the children of Israel, saying, In the seventh month, in the first day of the month, shall ye have a sabbath, a memorial of blowing of trumpets, an holy convocation.

Bible References

In the seventh

1 Corinthians 15:52
in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised imperishable, and we will be changed.
1 Thessalonians 4:16
For the Lord himself will descend from heaven, with a loud command, with the voice of the archangel and with the trumpet call of God, and the dead in Christ will rise first.