We see Christians all over the world being murdered and tortured for their Faith. Any Christian who thinks they are special and that won't have to suffer as the ones who have already been martyred are delusional. Prepare, or beware! The only thing anyone should be concerned with is leading the lost into Salvation!
I agree with you in that many will be caught unprepared and the reason, as you say, is that they are being taught they will be raptured.
The Bible teaches us that there are two tribulations, the first is the one of Satan when he comes pretending to be Christ. Most of the world will follow him, including many Christians. The tribulation of Christ is after his. If we have not fallen for Satan's deceit and worshipped him then we will be brought through it as Noah, Daniel in the lion's den, God's children in the Exodus, etc., etc. There are many examples of God's protection of His children.
Prepare, or beware! The only thing anyone should be concerned with is leading the lost into Salvation!
Yes, and warning them that Satan comes first as Christ warned us in His Word.