The monks of the Solovetsky monastery pass on the answer given by Righteous Zosima to his disciples, when he was asked how the Antichrist could be recognized. Righteous Zosima said,
“When you will hear that Christ has appeared on earth, know then that this is the Antichrist.”
This answer is most precise. The world or mankind will not recognize the Antichrist, it will recognize him as Christ, it will proclaim him Christ… Therefore watch and pray.