Paul speaks of it "But I would not have you
to be ignorant, brethren, concerning them
who are asleep, that ye sorrow not, even as
others who have no hope. For it we believe
that Jesus died and rose again, even so them
also who sleep in Jesus will God bring with
him.
For this we say unto you by the word of the
Lord, that we who are alive and remain
unto the coming of the Lord shall not precede
them who are asleep.
For the Lord himself shall descend from
heaven with a shout, with the voice of the
archangel, and with the trump of God, and
the dead in Christ shall rise first; Then we
who are alive and remain shall be caught up
together with them in the clouds, to meet the
Lord in the air; and so shall we ever be with
the Lord.
Wherefore, comfort one another with these
words," 1 Thessalonians 4:13-18