It will end, whether its through rapture, death beforehand, or being saved in the tribulation, ie not taking the mark of the beast and suffering for Christ sake, it will end.. God’s will be done..
All those unscriptural Tim LaHaye books have perverted sound Bible doctrine.
"Immediately after the tribulation of those days shall the sun be darkened, and the moon shall not give her light, and the stars shall fall from heaven, and the powers of the heavens shall be shaken: And then shall appear the sign of the Son of man in heaven: and then shall all the tribes of the earth mourn, and they shall see the Son of man coming in the clouds of heaven with power and great glory." (Matthew 24:29,30)
The tribulation happens BEFORE the day of the Lord, when he comes in power to gather his elect (those who believe on him) and judge the earth. As unpalatable as it may seem believers will experience tribulation. We already experience tribulation, but it will increase prior to the day of the Lord. After the believers are taken up, the Lord will JUDGE the earth. The bible does NOT call that period of judgement tribulation.