Frank and Doves,
This will be my last response on this matter. I can see that those that believe like me are highly outnumbered here, and this is something that will never truly be explored until we reach heaven ( unless we are left behind and have to go through the tribulation, which makes sense, but is it really true  if one is truly born again ? )
   Frank says anyone who commits willful sin will be left behind and not make the rapture. So you are saying that born again believers /members of Christ's body, the church only have  forgiveness of past sins ? Paul by The Holy Ghost says that we have redemption through the blood by the faith OF Christ. Sounds final and non- remittable to me. So since the New Testament apparently contradicts itself( or God does), then you are saying that the Apostle Paul and the Holy Ghost LIED about us being saved by grace through faith, and it is really by being good enough and not sinning PERIOD after you have the new life of the Spirit..huh ?
  Ecc. 7: 20 " For there is not a just man upon the earth, that doeth good, and sinneth not." Frank has just disqualified everyone from the Rapture.  Congratulations ! And they didn't even look at any pornography, or live a sinful lifestyle. I Jn. 5 : 18 " We know that whosoever is born of God sinneth not".. . But we just saw that everyone sins, according to the word. Is God lying ? Or contradicting Himself ? Has any Christian here ever looked upon the opposite sex and coveted them ? Then you have committed covetousness, idolatry, and adultery, according to Jesus. Have you ever dwelled upon a Superbowl game, or had a classic car, motorcycle or truck that you could not take your eyes off of ? You are guilty of idolatry and having a god before God. No problem right, you just hit your knees and repent of everything and you're forgiven.
   But what if it's something you did that you can't remember ? That's O.K., you just blanket your confession to " include all"..until you go back to Walmart and see that girl again..oops !
   The explanation for contradictions in the bible are such:
A) God is transitioning from  one requirement for salvation( faith in Christ + works meet for repentance) - to  another - ( grace through the  faith OF Christ ).

B ) There are no contradictions, no spiritualizing, just a literal interpretation. If your theology does not account for the contradictions, then your understanding is flawed and your belief system is counter to the scriptures.

C )If your beliefs, doctrine and theology contradicts what your Apostle is teaching you ( Paul, if you didn't know already), then you are reading someone else's mail and committing despite to the grace of God by teaching heresy and telling everyone they are lost if they sin..99.9 % of the not- to be-raptured saints with non- repented forgotten sin thank you for the uplifting moral boost.

D)Prophecy confusion. Eschatologists have no problem believing that un-fulfilled future prophecy has yet to be fulfilled, but they cannot believe that salvation will be according to Jewish Apostle's doctrine during a time of God Focusing on the Jews pertaining to a Jewish King and a Kingdom...who-da-thunk ?

E) Wrong Bible. If your doctrine  only fits your bible, but not eternal security, then you are using a corrupted bible..sorry. Would you rather be lied to ?

F ) Failed. You have failed to discern what Paul is saying in his Epistles and who he is speaking to. He said those who commit some sins will not enter in. If the warning was for the unsaved, then grace may be applicable. If it is to the Church, then the transition to Total redemption and Sealed by the Spirit is not yet complete..pay attention to the contexts ! This grace was transitional, as a courtesy to not offend the Jews ! They were not cut off in a moment !

G) Know your bible ! If it makes no sense, try a different one. All the cross references should check out. (KJV checks out )

I support righteous living and sinlessness. To say that we do not sin, or that a person will not make the rapture because of sin is unrealistic. As long as we are in this flesh we will sin. Those in the tribulation will be lost if they persist in un-repentant or persistent sin. The bible bears this out. Right doctrine, wrong  dispensation.
  A person in this dispensation of grace can be saved at 5 years old, go about their life for 20 years, and hear the word and become re-filled and aware that they were  always saved for all those years and did not know it nor remember at the time. I have seen it, and it is witnessed and verified.
But Frank says we can fall away and miss the rapture..I got an idea ! Do your best to pray , confess, do not pre-meditate to sin, read your bible and trust The Lord. It is not all on you , as some would have you believe. Rightly divide and don't wring your hands over someone else's readiness doctrine. Jesus said He came to bring a sword, and will rule in the  Millennium with a rod of Iron. Someone saved in the trib. will have to become ready to obey and be ruled by a righteous King. Quitting is not an option.Many will fall away. Sign and wonders will follow those who OBEY and BELIEVE. Those rebels in the Millennium will have their land and nations cursed for rejecting The Son's Sovereignty. Many mortals in the millennium will rebel and be destroyed after the thousand years is complete. This is serious ! Don't be beaten up by doctrine that applies after we are gone.

God Bless,
Alan T