Yes. Scripture states that no one can know the specific date or hour because it is the Father’s authority to announce it. The very next passage however states that the people who know scripture and prophecy will recognize the signs and will be prepared for the second coming. Those who aren’t rooted in scripture will be caught completely off guard and will be totally surprised by the second coming. For them, it’s stated that the second coming will be like a thief in the night in the sense that it will seem to come out of nowhere. Here’s the biblical reference:

5 Now, brothers and sisters, about times and dates we do not need to write to you, 2 for you know very well that the day of the Lord will come like a thief in the night. 3 While people are saying, “Peace and safety,” destruction will come on them suddenly, as labor pains on a pregnant woman, and they will not escape.

4 But you, brothers and sisters, are not in darkness so that this day should surprise you like a thief. 5 You are all children of the light and children of the day. We do not belong to the night or to the darkness. 6 So then, let us not be like others, who are asleep, but let us be awake and sober.

1 Thessalonians 5:1-6