As far as the harvests goes, I believe at the beginning of the reign of antiChrist, only 7000 believers will recognize him as Satan and not Jesus. I don't know what the rapturists are going to think about his arrival because they expected to disappear rather than witness Jesus' arrival, whom they mistake the antiChrist for. But I think he will have a message for everyone on earth. To the rapturists he will say "come with me, so you can avoid the tribulation". To the Islamists he will say "I am your Mahdi (or twelfth imam, or whatever)", to the liberals he will be the hippy-type of Jesus that they believed in in the 60s, and anyone who doesn't follow him is a right-wing, pro-money, war-monger. The asians will fall in line. Many of the 7000 will will be delivered up to the antiChrist to be "saved" by him and then God will speak through them at their trials. And also there will be a remnant that will broadcast the truth from a place of safety.
Many will be converted at this time and these will be the harvests. The antiChrist gets furious at the 7000 and the remnant and there will be Armageddon and Hamongog. At the Seventh Trump Jesus returns and we all will be harvested at once, good, bad, everyone, and the Millennium will begin, with us almost instantly in our spiritual bodies (no need to worry about planes falling out of the sky in this scenario). The 7000 will rule with Christ over the world, teaching those in the harvests if they didn't have an opportunity to learn in their flesh life, for the Millennium.
Um, the Spiritual Church of Jesus Christ will not be here to be deceived. When God sends 'strong delusion' the hour of testing has set in and Reb 3 tells the faihtful church they will be kept from the hour of testing and thus the testing.
When you read the Secrets of The Feasts, you will see why the following reasoning is flawed from a Feasts of Israel as God's Times perspective: "At the Seventh Trump Jesus returns and we all will be harvested at once, good, bad, everyone, and the Millennium will begin, with us almost instantly in our spiritual bodies
The Fteast of Trumpets is the reference Paul makes in 1 Thess 4, not the seven trumpets of the wrath of God Great Tribulation. Paul gives the key with 'wherefore comfort one another with these sayings.' The Thessalonians had been misled to believe the tribulation had already beguna nd their dead believers had missed it. Paul wrote that section in the letter to reassure them. It is tied to the clarification he gave in the second letter where he referred to the gathering together unto the Lord and the departure before the lawless one can be revealed by the Restrainer being taken out of the way. The explanation of the word 'apostasia' is in this thread, so I won't go over it again here.
HAve a good day and keep His word in your mind during the day ... sort of what's referred to as 'diligently seeking Him'.