1 Corinthians 15:52

in the twinkling of an eye, at the sound of the last trumpet (for the trumpet shall sound) and the dead shall be raised incorruptible, and we shall be changed:

1 Thessalonians 4:16

For the Lord himself will descend from heaven with acclamation, with the voice of the archangel, and with the trumpet of God: and the dead in Christ shall 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 the twinkling of an eye, at the sound of the last trumpet (for the trumpet shall sound) and the dead shall be raised incorruptible, and we shall be changed:
1 Thessalonians 4:16
For the Lord himself will descend from heaven with acclamation, with the voice of the archangel, and with the trumpet of God: and the dead in Christ shall rise first;