Where is your faith?
Personally, I would be just a little bit surprised if our Lord decided to lend *any* validity to a date handed down by the blood drinking, demon worshipping, human sacrificing "prophets" of the Mayan Empire. I suspect that any calamity that falls on that date will have more driving it from human and/or demonic factions than any Divine influence.
At any rate, the Mayans own legends do not describe the end of the world in any sense that most people would mean it. They have a several thousand year history and they spent a lot of it charting weather patterns and geological patterns and other things. Assuming their system was remotely accurate (which we really can't tell because so much of their records were destroyed or lost), they're most likely just predicting a cyclical earth quake in the area of the main empire (which no longer exists) or something of that nature.
Having said that, let's pretend for a moment that the Rapture is scheduled for Dec 21, 2012.
Why would this bother you?
That would mean nothing but that in just four short years, we'd be home with our departed loved ones, surrounded by the restored and perfected Body of Christ, united forever with our Lord and Savior.
There'd be a bit of tribulation for those who waited till the very last minute to make up their minds about things, but I am *certain* our Lord has good reason to institute such trials upon the remainder of mankind.
The sheep and the goats will be separated.
Every knee will bow, every tongue confess that Jesus Christ is Lord.
The beast and the false prophet and the great dragon would all be cast into the pit forever.
Evil as a concept and force will simply cease.
Sickness and death would be finally and completely overcome even in the physical world, which would be restored to its pre-fallen state.
How is that...bad?
What does it change about how you live your life if the date is absoluely correct?
Are you not *already* living every day as if RIGHT NOW the Lord God Himself dwells within you?
Is your place in Heaven not already assured by the washing of His blood?
If this is not already the level of your relationship with Jesus - the problem is not with the date.
As Shakespere wrote "The fault, dear Brutus, lies not in our stars...but in ourselves...."
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But let us rather assume (since there is no specific Biblical reason to believe otherwise) that Dec 21, 2012 is just another day.
Again...how is that....bad?
Does the fact that you need to wait a bit longer than four years to go home with the Lord physically change the relationship you may foster with Him RIGHT HERE, RIGHT NOW?
The Holy Spirit is on....the....Earth!
Is the Kingdom of Heaven *not* "at hand" RIGHT NOW for those who believe and live in the Spirit?
Can *anything* happen to any believer that would tear him or her out of the Lord's hand once he or she is saved? (and if you can't answer this one you need to re-read John 10)
Sister, praise God.
Why do you need to be concerned with dates?
You are saved. You are healed. You are blessed and protected.
You *know* that your commission upon the earth is to share the Good News with as many as you can. Share it by example in how you live your own life, by quotation of the Word of God, and by inspiration as the Holy Spirit directs you from moment to moment.
Whether the "end" (a better word really would be "restoration") of the world is today or a million years from now, God is merciful and just.
He is not going to let anyone just "slip through the cracks" into Hell that would have otherwise followed Him if given but one more moment.
He's just not that kind of God.
Those who can be saved will be saved, but let that not be an excuse for you to be the appendix of the Body of Christ. Be a healthy useful member of the Body and fullfil the Great Commission wherever and whenever you can.
If you *must* debate the end of the world - at least put the debate to good use:
There are a quite a number of pagans who are certain about that four year distant date.
Because so many pagan religions really have no salvation analog to them, they're often hiding a great deal of terror. They are not at all certain what waits for them in the afterlife. Most of them fear simply being reincarnated into another life in a blighted cataclysm struck world. A force called "Karma" dictates that they will live in suffering to pay for their wrongdoings here on earth so far. They expect to live hard lives in a post-Apocolyptic horror story that either plays out in a sci-fi theme or else is full of "old world" demons and magic and so on. Either way...not much fun. They are terribly interested in any information they can get about what those last days will be like. And our Lord gave us Revelations to answer that need.
You don't *really* read Revelations lightly. If you eliminate the idea that it is alligorical the book can scare just about anyone. It is rarely quoted at length from the pulpit because to put it on a movie screen you'd need an NC-17 rating. It's that graphic and terrible.
These pagans *easily* believe in dragons coming up out of the sea to end the world. They have *no difficulty* imagining a curse that lets you live and survive even though all the flesh has burned off your bones and boils seep with pus from every muscle. This is exactly what thier own myths say is possible. When Christianity *agrees* (even in possible allegory) it makes them sit up and take notice.
And when you say "I am so very much looking forward to the Rapture" they will ask if you are mad. Who would want to endure such things?!?
Well...no one sane would want to endure such horror....but....we...the Body of Christ...are exempt. OUR debts -- all our "karma" (if there was such a thing) is already paid. We are taken up with the Lord in Chapter 5 of Revelations and we do not endure the terrible events of the remaining chapters. Our Lord loves us so much He laid down His own holy life for us, spilled His own Divine blood for us and for anyone who will believe and follow Him. Pagans who want nothing to do with Jesus in day to day life are often quite happy to reach for His hand when they see the flood waters start rising around their ankles.
Use that.
Because whether He comes tomorrow or in 2012 or in a thousand years HE IS COMING and we ARE on a deadline.