Death is certain but the Bible speaks about untimely death!
It is written in the Bible (Galatians 6:7): "Do not be deceived: God cannot be mocked. A man reaps what he sows"
Here are some men and women who mocked God:

JOHN LENN
ON:
Some years ago during his interview with a reporter from an American
magazine, he said: "Christianity will end, it will disappear. I do not have
to argue about that. I am certain. Jesus was ok, but his subjects were too
simple. Today we are more famous than him." (1966). Lennon, after saying
that the Beatles were more famous than Jesus Christ, was shot six times.
TANCREDO NEVES (President of Brazil ):
During the Presidential campaign, he said if he got 500,000 votes from his
party, not even God would remove him from the presidency. Sure he got the
votes, but he got sick a day before being made president---then he died.
CAZUZA (Bi-sexual Brazilian composer, singer and poet): During a show in
Canecïo ( Rio de Janeiro ), whilst smoking his cigarette, he puffed out some
smoke into the air and said: "God, that's for you." He died of AIDS at the
age of 32 in a horrible manner.
THE MAN WHO BUILT THE TITANIC:
After the construction of the Titanic, a reporter asked him how safe the
ship would be. With an ironic tone he said: "Not even God can sink it." The
result? I think you know what happened to the Titanic.
MARILYN MONROE:
She was visited by Billy Graham during a presentation of a show. He said
the spirit of God had sent him to preach to her. After hearing what he had
to say, she said: "I don't need your Jesus." A week later, she was found
dead in her apartment.
BON SCOTT:
The ex-vocalist of the AC/DC, on one of his 1979 songs he sang: "Don't
stop me, I'm going down all the way, down the highway to hell." On the 19th
of February 1980, Bon Scott was found dead, choked by his own vomit.
CAMPINAS/SP IN 2005
In Campinas , Brazil a group of drunk friends, went to pick up a young
woman. The mother accompanied her to the car and was so worried about the
drunkenness of her daughter's friends, holding her hand she said to her who
was already seated in the car: "MY DAUGHTER, GO WITH GOD AND MAY HE PROTECT
YOU." The daughter responded: "ONLY IF HE (GOD) TRAVELS IN THE TRUNK, CAUSE INSIDE HERE IT'S ALREADY FULL."
Hours later, news came that they had been involved in a fatal accident,
everyone had died. The car could not be recognized as to what type of car
it had been, but surprisingly, the trunk was intact. The police said there
was no way the trunk could have remained intact. To their surprise, inside the trunk was a crate of eggs: none was broken.
Christine Hewitt: a Jamaican journalist and entertainer, said the Bible
(Word of God) was the worst book ever written. In June 2006 she was found
burnt beyond recognition in her motor vehicle.
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Many more important people have forgotten that there is no other name that
was given so much authority as the name of Jesus. Many have died, but only
Jesus died and rose from the dead, and He is still alive.
*this was taken from an email by my friend(tnx ate nim)