[Jesus continued:] "Then if anyone tells you, 'Look, here is the Messiah,' or 'There he is,' don't believe it. For false messiahs and false prophets will rise up and perform great signs and wonders so as to deceive, if possible, even God's chosen ones. See, I have warned you about this ahead of time.
"So if someone tells you, 'Look, the Messiah is out in the desert,' don't bother to go and look. Or, 'Look, he is hiding here,' don't believe it! For as the lightning flashes in the east and shines to the west, so it will be when the Son of Man comes. Just as the gathering of vultures shows there is a carcass nearby, so these signs indicate that the end is near."
— Matthew 24:23-28 NLT
Pretenders and deceivers! In essence, that's what Jesus calls the false messiahs and false prophets. They are fakes, phonies, and liars.
When Jesus returns, he assures us that there won't be any doubt about it. Everyone will know, just as lightning can be seen on the horizon. His return will be with glory and power. This glorious day will not be hidden from anyone. Instead, it will be a day to glory in for all of God's people!
So we are not to lose heart as we wait for his return. We haven't missed the boat. He hasn't forgotten us. When he comes, we'll share in his victory!