@TonusOH
The "invisible presence" is another concept that is very dubious. The word "παρουσια" which means "presence" carries an element of physical presence. Paul in Phil 2:12 makes a distinction between his own physical "παρουσια" to his physical absence, i.e. "απουσια". JWs basically deny the possibility that Jesus ever appeared on earth physically, in the flesh. They literally forbid it in their theology. 😊 In this context, it is interesting that John claims in 2 John 1:7 that those who deny Jesus "coming" ("ερχομενος") in the flesh ( εν σαρκι) are seducers and Antichrist. The participle of present, "coming" is very interesting - it really means an activity that happens (and lasts) in the present. It is very important in the theologically significant passages Mat 24:30 // Mk 14:26 // Lk 21:27 about the coming Christ with the clouds, whom they will(!) see. In the future event (they will see) is the present event (the coming of Christ).
So if the apostles were asking about his "παρουσια" they were interested in how they would identify him again - physically - in the future. "Invisibility" would have been the direct opposite of what the apostles expected and also what Jesus assured them would come. And John even links the denial of Christ's physical (second) coming with the Antichrist. So it is clear that only the possibility of Christ's physical - second - coming opens up the possibility of false Messiahs appearing. And also the Antichrist himself (i.e., instead of Christ). And that is why Christ warns against them.
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But I think your question was mainly directed at whether Christ was somehow deliberately hiding the time of His coming. I don't think so. The answer to when His second coming will occur is really tied to when God Himself decides. The human answer to the timing of Christ's coming is - in my opinion - intimately connected to the question of God's love and justice, the "theodicey" question. Why didn't Jesus come in the 5th or 13th or 18th or 20th century? Will he come only in the 23rd century? It's a complex question and beyond the scope of the discussion...
But one can ask other things: did Jesus warn that his coming would not come immediately, within a generation or two after the apostles? That is a simpler question. 😊 At the end of Jesus' answer to the question of the time and the sign of his (physical) presence, he also communicates (Mat 24:42): watch, for you do not know in what day your Lord will come. He then communicates to them three parables that have a common, characteristic element: they always contain a moment in which the "actors" of these parables are responding in some way to the fact that the Lord is not coming (Mat 24:48), that He has tarried (Mat 25:5), or that He is returning only after a very, very long time (Mat 25:19). As in the first parable, it is again also emphasized that the (evil) slave will not know when the Lord is coming (Mat 24:50), so also in the second parable, the call to watchfulness is repeated (Mat 25:13). And in the third parable, the "unexpectedness" of the coming of the master after a very long time is actually the main source of trouble, for the "useless" slave.
In Rev. 1:1, we do encounter the statement that events will occur "soon," but the Greek phrase ( εν ταχει) has more of a "speed" meaning. The events that are described there will happen in rapid succession - if the 1260 days of preaching by the two witnesses who are killed by the Beast, who will be active for 42 months, then in terms of the 2000 years that have elapsed since this text was written, it would be very "quickly" indeed. The question is, did the Christians in Ephesus, who were one of the recipients of this Revelation, understand it that way as well? For in Rev. 1:3 it is written that "the time is at hand." What time? I assume that the Christians at that time had at least the same information as we do today: they knew that if they were the "generation that would not pass away", then the latest possible time for the second coming of Christ would be sometime between 130 and 140 AD. But Jesus did not come. So they had to pass on the information to their descendants or younger fellow believers that they may be the generation that will not pass away, so they have to be vigilant, but it is still true that they may not be the generation that will not pass away either. In fact, all that remains is the call to be vigilant. The question of why it's taking so long is addressed by the answers within theodicy... so we go back to the beginning again😊 It can be answered, but ugh, it's really quite a large area...