According to Bible prophecy Christ has already come with a new name and billions of Christians who were told to watch and pray did not do so and so have betrayed Jesus by not accepting His Second coming.
According to Christ Himself, those who rejected the second Coming are considered non believers. Baha'u'llah has come yet Christians close the door in His Face, the Face of Christ Himself.
Like 12:45-46
45 But and if that servant say in his heart, My lord delayeth his coming; and shall begin to beat the menservants and maidens, and to eat and drink, and to be drunken; 46 The lord of that servant will come in a day when he looketh not for him, and at an hour when he is not aware, and will cut him in sunder, and will appoint him his portion with the unbelievers.