The pre trib rapture was given to increase church attendance , offering people "fire insurance salvation" the truth is the church will go thru the tribulation, it will be purified by fire, God will winnow the wheat, separate the sheep and goats, read these scriptures:
Matthew 25:31-46
New International Version (NIV)
The Sheep and the Goats
31 When the Son of Man comes in his glory, and all the angels with him, he will sit on his glorious throne. 32 All the nations will be gathered before him, and he will separate the people one from another as a shepherd separates the sheep from the goats. 33 He will put the sheep on his right and the goats on his left.
◄ 1 Peter 1 ►
New International Version
1Peter, an apostle of Jesus Christ,
To Gods elect, exiles scattered throughout the provinces of Pontus, Galatia, Cappadocia, Asia and Bithynia, 2who have been chosen according to the foreknowledge of God the Father, through the sanctifying work of the Spirit, to be obedient to Jesus Christ and sprinkled with his blood:
Grace and peace be yours in abundance.
Praise to God for a Living Hope
3Praise be to the God and Father of our Lord Jesus Christ! In his great mercy he has given us new birth into a living hope through the resurrection of Jesus Christ from the dead, 4and into an inheritance that can never perish, spoil or fade. This inheritance is kept in heaven for you, 5who through faith are shielded by Gods power until the coming of the salvation that is ready to be revealed in the last time. 6In all this you greatly rejoice, though now for a little while you may have had to suffer grief in all kinds of trials. 7These have come so that the proven genuineness of your faithof greater worth than gold, which perishes even though refined by firemay result in praise, glory and honor when Jesus Christ is revealed. 8Though you have not seen him, you love him; and even though you do not see him now, you believe in him and are filled with an inexpressible and glorious joy, 9for you are receiving the end result of your faith, the salvation of your souls.
10Concerning this salvation, the prophets, who spoke of the grace that was to come to you, searched intently and with the greatest care, 11trying to find out the time and circumstances to which the Spirit of Christ in them was pointing when he predicted the sufferings of the Messiah and the glories that would follow. 12It was revealed to them that they were not serving themselves but you, when they spoke of the things that have now been told you by those who have preached the gospel to you by the Holy Spirit sent from heaven. Even angels long to look into these things.
Be Holy
13Therefore, with minds that are alert and fully sober, set your hope on the grace to be brought to you when Jesus Christ is revealed at his coming. 14As obedient children, do not conform to the evil desires you had when you lived in ignorance. 15But just as he who called you is holy, so be holy in all you do; 16for it is written: Be holy, because I am holy.a
17Since you call on a Father who judges each persons work impartially, live out your time as foreigners here in reverent fear. 18For you know that it was not with perishable things such as silver or gold that you were redeemed from the empty way of life handed down to you from your ancestors, 19but with the precious blood of Christ, a lamb without blemish or defect. 20He was chosen before the creation of the world, but was revealed in these last times for your sake. 21Through him you believe in God, who raised him from the dead and glorified him, and so your faith and hope are in God.
22Now that you have purified yourselves by obeying the truth so that you have sincere love for each other, love one another deeply, from the heart.b 23For you have been born again, not of perishable seed, but of imperishable, through the living and enduring word of God. 24For,
All people are like grass,
and all their glory is like the flowers of the field;
the grass withers and the flowers fall,
25but the word of the Lord endures forever.c
And this is the word that was preached to you.
◄ Matthew 13 ►
New International Version
The Parable of the Sower
1That same day Jesus went out of the house and sat by the lake. 2Such large crowds gathered around him that he got into a boat and sat in it, while all the people stood on the shore. 3Then he told them many things in parables, saying: A farmer went out to sow his seed. 4As he was scattering the seed, some fell along the path, and the birds came and ate it up. 5Some fell on rocky places, where it did not have much soil. It sprang up quickly, because the soil was shallow. 6But when the sun came up, the plants were scorched, and they withered because they had no root. 7Other seed fell among thorns, which grew up and choked the plants. 8Still other seed fell on good soil, where it produced a cropa hundred, sixty or thirty times what was sown. 9Whoever has ears, let them hear.
10The disciples came to him and asked, Why do you speak to the people in parables?
11He replied, Because the knowledge of the secrets of the kingdom of heaven has been given to you, but not to them. 12Whoever has will be given more, and they will have an abundance. Whoever does not have, even what they have will be taken from them. 13This is why I speak to them in parables:
Though seeing, they do not see;
though hearing, they do not hear or understand.
14In them is fulfilled the prophecy of Isaiah:
 You will be ever hearing but never understanding;
you will be ever seeing but never perceiving.
15For this peoples heart has become calloused;
they hardly hear with their ears,
and they have closed their eyes.
Otherwise they might see with their eyes,
hear with their ears,
understand with their hearts
and turn, and I would heal them.a
16But blessed are your eyes because they see, and your ears because they hear. 17For truly I tell you, many prophets and righteous people longed to see what you see but did not see it, and to hear what you hear but did not hear it.
18Listen then to what the parable of the sower means: 19When anyone hears the message about the kingdom and does not understand it, the evil one comes and snatches away what was sown in their heart. This is the seed sown along the path. 20The seed falling on rocky ground refers to someone who hears the word and at once receives it with joy. 21But since they have no root, they last only a short time. When trouble or persecution comes because of the word, they quickly fall away. 22The seed falling among the thorns refers to someone who hears the word, but the worries of this life and the deceitfulness of wealth choke the word, making it unfruitful. 23But the seed falling on good soil refers to someone who hears the word and understands it. This is the one who produces a crop, yielding a hundred, sixty or thirty times what was sown.
The Parable of the Weeds
24Jesus told them another parable: The kingdom of heaven is like a man who sowed good seed in his field. 25But while everyone was sleeping, his enemy came and sowed weeds among the wheat, and went away. 26When the wheat sprouted and formed heads, then the weeds also appeared.
27The owners servants came to him and said, Sir, didnt you sow good seed in your field? Where then did the weeds come from?
28 An enemy did this, he replied.
The servants asked him, Do you want us to go and pull them up?
29 No, he answered, because while you are pulling the weeds, you may uproot the wheat with them. 30Let both grow together until the harvest. At that time I will tell the harvesters: First collect the weeds and tie them in bundles to be burned; then gather the wheat and bring it into my barn. 
The Parables of the Mustard Seed and the Yeast
31He told them another parable: The kingdom of heaven is like a mustard seed, which a man took and planted in his field. 32Though it is the smallest of all seeds, yet when it grows, it is the largest of garden plants and becomes a tree, so that the birds come and perch in its branches.
33He told them still another parable: The kingdom of heaven is like yeast that a woman took and mixed into about sixty poundsb of flour until it worked all through the dough.
34Jesus spoke all these things to the crowd in parables; he did not say anything to them without using a parable. 35So was fulfilled what was spoken through the prophet:
I will open my mouth in parables,
I will utter things hidden since the creation of the world.c
The Parable of the Weeds Explained
36Then he left the crowd and went into the house. His disciples came to him and said, Explain to us the parable of the weeds in the field.
37He answered, The one who sowed the good seed is the Son of Man. 38The field is the world, and the good seed stands for the people of the kingdom. The weeds are the people of the evil one, 39and the enemy who sows them is the devil. The harvest is the end of the age, and the harvesters are angels.
40As the weeds are pulled up and burned in the fire, so it will be at the end of the age. 41The Son of Man will send out his angels, and they will weed out of his kingdom everything that causes sin and all who do evil. 42They will throw them into the blazing furnace, where there will be weeping and gnashing of teeth. 43Then the righteous will shine like the sun in the kingdom of their Father. Whoever has ears, let them hear.
The Parables of the Hidden Treasure and the Pearl
44The kingdom of heaven is like treasure hidden in a field. When a man found it, he hid it again, and then in his joy went and sold all he had and bought that field.
45Again, the kingdom of heaven is like a merchant looking for fine pearls. 46When he found one of great value, he went away and sold everything he had and bought it.
The Parable of the Net
47Once again, the kingdom of heaven is like a net that was let down into the lake and caught all kinds of fish. 48When it was full, the fishermen pulled it up on the shore. Then they sat down and collected the good fish in baskets, but threw the bad away. 49This is how it will be at the end of the age. The angels will come and separate the wicked from the righteous 50and throw them into the blazing furnace, where there will be weeping and gnashing of teeth.
51Have you understood all these things? Jesus asked.
Yes, they replied.
52He said to them, Therefore every teacher of the law who has become a disciple in the kingdom of heaven is like the owner of a house who brings out of his storeroom new treasures as well as old.
A Prophet Without Honor
53When Jesus had finished these parables, he moved on from there. 54Coming to his hometown, he began teaching the people in their synagogue, and they were amazed. Where did this man get this wisdom and these miraculous powers? they asked. 55Isnt this the carpenters son? Isnt his mothers name Mary, and arent his brothers James, Joseph, Simon and Judas? 56Arent all his sisters with us? Where then did this man get all these things? 57And they took offense at him.
But Jesus said to them, A prophet is not without honor except in his own town and in his own home.
58And he did not do many miracles there because of their lack of faith.