The reasons why so many Christians who say they are saved, born-again believers of Yeshua will miss the pre-Tribulation Rapture are because they will not take to heart the Scriptures that warn them about their need to get prepared, stay ready, and stay alert – keep looking out for Yeshua’s Return – and because they don’t believe in a pre-Tribulation Rapture.
We are meant to be lighthouses aligning the shores of the sea of life—shining our lights in such a way that we become beacon lights that guide the world’s unsaved masses to the true Light. In other words, we believers in Christ are called to be visible lights that point spiritually unenlightened souls to the true Light of the world—Jesus Christ.
The Bible neither suggests/states that the Rapture will be unexpected for EVERYONE nor does the Bible suggest/state that the Day of the Lord will be unexpected for EVERYONE. On the contrary, Christ Jesus clearly implies that the Rapture ONLY will come as a thief in the night to the unprepared and unwatchful believers. Likewise, the apostle Paul clearly states that the Day of the Lord ONLY will come as a thief in the night to those individuals who are in “darkness”—to those very surprised ungodly and immoral unbelievers!