Except it be given him of the Father (ean mh h dedomenon autwi ek tou patro). Condition of third class with ean mh and periphrastic perfect passive subjunctive of didwmi. Precisely the same point as in verse Luke 44 where we have elkush instead of h dedomenon. The impulse to faith comes from God. Jesus does not expect all to believe and seems to imply that Judas did not truly believe.