1 Corinthians 15:52

in a moment, 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.

1 Thessalonians 4:16

because the Lord himself will descend from heaven with a shout, with the voice of the archangel, and the trump of God: and the dead in Christ shall rise first;

Hebrews 12:20

for they could not endure that which was spoken, If a wild beast should touch the mountain, it shall be pierced through with a dart:

Treasury of Scripture Knowledge

Summary

There shall not an hand touch it, but he shall surely be stoned, or shot through; whether it be beast or man, it shall not live: when the trumpet soundeth long, they shall come up to the mount.

Bible References

When the trumpet

1 Corinthians 15:52
in a moment, 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.
1 Thessalonians 4:16
because the Lord himself will descend from heaven with a shout, with the voice of the archangel, and the trump of God: and the dead in Christ shall rise first;