Jesus repeated His warning about people who will claim to be the Messiah (cf. Mark 13:5-6) so His disciples would not believe them. "If possible" ( Mark 13:22) does not imply that the elect will inevitably continue to believe in Jesus and follow Him faithfully. If that were Song of Solomon , Jesus" repeated warnings would be meaningless. It means that the false Messiahs will do miracles with the intent of leading the elect into error if they, the false Messiahs, can (cf. 2 Timothy 3:1-15). In view of this possibility, Jesus" disciples need to be discerning (Gr. blepete, Mark 13:23). [source][source][source]