According to Paul, don't let anyone trick you because before something important happens, there will be people who turn away from doing good things, and a very bad person will be shown. This means we should be ready and not be fooled by wrong things.
2 Thessalonians 2:3: Let no man deceive you by any means: for [that day shall not come], except there come a falling away first, and that man of sin be revealed, the son of perdition;
This verse states that no one knows the exact timing of the end, not even the angels or the Son, which contrasts with the focus on discerning signs preceding the end in 2 Thessalonians 2:3.
Matthew 24:36: But of that day and hour knoweth no [man], no, not the angels of heaven, but my Father only.