They say that a false messiah is coming, so deceitful even the elect could be deceived if possible… now that’s deceitful.
Many of the early church, and today, say this false messiah will even raise the dead.

So, you must know these things.

The Day of the Lord is The true Coming of Jesus.
Jesus comes as a THIEF IN THE NIGHT.
This is what will happen.

2nd Peter 3.
3 This is now, beloved, the second letter I am writing to you in which I am stirring up your sincere mind by way of reminder, 2 that you should remember the words spoken beforehand by the holy prophets and the commandment of the Lord and Savior spoken by your apostles.

3 Know this first of all, that in the last days mockers will come with their mocking, following after their own lusts, 4 and saying, “Where is the promise of His coming? For ever since the fathers fell asleep, all continues just as it was from the beginning of creation.” 5 For when they maintain this, it escapes their notice that by the word of God the heavens existed long ago and the earth was formed out of water and by water, 6 through which…
the world at that time was destroyed
being flooded with water. 7 But…
by His word the present heavens and earth are being reserved for fire, kept for the Day of Judgment and destruction of ungodly men.
8 But do not let this one fact escape your notice, beloved, that with the Lord one day is like a thousand years, and a thousand years like one day.

9 The Lord is not slow about His promise, as some count slowness, but is patient toward you, not wishing for any to perish but for all to come to repentance.
10 But, the day of the Lord will come like a thief, in which the heavens will pass away with a roar and the elements will be destroyed with intense heat, and the earth and its works will be burned up.

Matthew 24 42 “Therefore be on the alert, for you do not know which day your Lord is coming.43 But be sure of this, that if the head of the house had known at what time of the night the thief was coming, he would have been on the alert and would not have allowed his house to be broken into.

Rev 16:15. “Behold, I am coming like a thief.”

1 Thessalonians 5:4
But you, brothers and sisters, are not in darkness so that this day should surprise you like a thief.

11 Since all these things are to be destroyed in this way, what sort of people ought you to be in holy conduct and godliness…
looking for and hastening the coming of the day of God, because of which the heavens will be destroyed by burning, and the elements will melt with intense heat! 13 But according to His promise we are looking for new heavens and a new earth, in which righteousness dwells.
14 Therefore, beloved, since you look for these things, be diligent to be found by Him in peace, spotless and blameless, 15 and regard the patience of our Lord as salvation; just as also our beloved brother Paul, according to the wisdom given him, wrote to you, 16 as also in all his letters, speaking in them of these things, in which are some things hard to understand, which the untaught and unstable distort, as they do also the rest of the Scriptures, to their own destruction. 17 You therefore, beloved…
knowing this beforehand,
be on your guard so that you are not carried away by the error of unprincipled men and fall from your own steadfastness, 18 but grow in the grace and knowledge of our Lord and Savior Jesus Christ. To Him be the glory, both now and to the day of eternity. Amen.

The coming of Jesus will be exactly as above. If those things have not happened… it is not Jesus, but a fake. Do not be deceived.