For you yourselves know perfectly that the day of the Lord so comes as a thief in the night. (1 Thess 5:2)To what event does the phrase thief in the night refer?
Oh, were back there again ey? Lets see who is going to be surprised like by the thief in the night and who is NOT.
1Th 5:1-5 But of the times and the seasons, brethren, ye have no need that I write unto you. For yourselves know perfectly that the day of the Lord so cometh as a thief in the night. For when they shall say, Peace and safety; then sudden destruction cometh upon them, as travail upon a woman with child; and they shall not escape. But ye, brethren, are not in darkness, that that day should overtake you as a thief. He is saying the coming tribulation will not overtake you as a thief because you are aware of the times and seasons which are a direct reference to the Lords Feast Days as well as the signs He said will take place!
Those of us who understand and know what to watch for will not be overtaken.