2Thes2:2 Don't be so easily shaken or alarmed by those who say that the day of the Lord has already begun. Don't believe them, even if they claim to have had a spiritual vision, a revelation, or a letter supposedly from us. 3 Don't be fooled by what they say. For that day will not come until there is a great rebellion against God and the man of lawlessness is revealed—the one who brings destruction.NLT
Escahtology is a branch of theology that studies the events of the last days. Right from the time of Apostle, there has been erroneous teachings about the order of events in the end time. Some believe we are in the great tribulation and that Jesus would come after the tribulation. There are several theories and some may have claimed to see visions of some sort.
The anti Christ won't come until the rapture takes place (2Thes2:3-10). What is holding him back is the rapture. He would reign for a period of seven years on earth. At the beginning, he would come as a rescuer but he would show his true colour and demand for worship and also would persecute the Jews and believers that refuse to accept the mark of the beast '666' (Dan9:27,matt24:15, Rev12:6; 13,17)
When you see people preaching that the anti Christ has come, they are clearly in the wrong. The anti Christ is not printing any currency now neither has he hijacked the governance of any country yet, when his time comes, all the leaders of the world would just allow him have his way as regards leadership but that is not now.
Our focus should be on making heaven and not the fads spreading round town.
Father, I receive grace to live ready In Jesus name. Amen