John 14:29

καὶ νῦν εἴρηκα ὑμῖν πρὶν γενέσθαι ἵνα ὅταν γένηται πιστεύσητε
And now I have told you before it come to pass, that, when it is come to pass, ye might believe.
Word Reference
Original Word Definitions
καὶ
G2532 CONJ
kai
and, also, even, so then, too, etc.; often used in connection (or composition) with other particles or small words
  • and, also, even, indeed, but
νῦν
G3568 ADV
nyn
___%___now___%___ (as adverb of date, a transition or emphasis); also as noun or adjective present or immediate
  • at this time, the present, now
εἴρηκα
G2046
ereō
an alternate for G2036 in certain tenses; to utter, i.e., speak or say
  • to utter, speak, say
ὑμῖν
G5213
hymin
to (with or by) you
  • you
πρὶν
G4250 ADV
prin
before
  • before, formerly, prior, sooner
γενέσθαι
G1096 V-2ADN
ginomai
to cause to be (___%___gen___%___-erate), i.e., (reflexively) to become (come into being), used with great latitude (literal, figurative, intensive, etc.)
  • to become, i.e., to come into existence, begin to be, receive being
    • "to become, i.e., to come to pass, happen
    • of events
    to arise, appear in history, come upon the stage
    • of men appearing in public
    to be made, finished
    • of miracles, to be performed, wrought
    to become, be made
ἵνα
G2443 CONJ
hina
in order that (denoting the purpose or the result)
  • that, in order that, so that
ὅταν
G3752 CONJ
hotan
whenever (implying hypothesis or more or less uncertainty); also causatively (conjunctionally) inasmuch as
  • when, whenever, as long as, as soon as
γένηται
G1096 V-2ADS-3S
ginomai
to cause to be (___%___gen___%___-erate), i.e., (reflexively) to become (come into being), used with great latitude (literal, figurative, intensive, etc.)
  • to become, i.e., to come into existence, begin to be, receive being
    • "to become, i.e., to come to pass, happen
    • of events
    to arise, appear in history, come upon the stage
    • of men appearing in public
    to be made, finished
    • of miracles, to be performed, wrought
    to become, be made
πιστεύσητε
G4100 V-AAS-2P
pisteuō
to have faith (in, upon, or with respect to, a person or thing), i.e., credit; by implication, to entrust (especially one's spiritual well-being to Christ)
  • to think to be true, to be persuaded of, to credit, place confidence in
    • of the thing believed
      • to credit, have confidence
      in a moral or religious reference
      • used in the New Testament of the conviction and trust to which a man is impelled by a certain inner and higher prerogative and law of soul
        • "to trust in Jesus or God as able to aid either in obtaining or in doing something: saving faith
    to entrust a thing to one, i.e., his fidelity
    • to be entrusted with a thing

καὶ νῦν εἴρηκα ὑμῖν πρὶν γενέσθαι ἵνα ὅταν γένηται πιστεύσητε
29
And now I have told you before it come to pass, that, when it is come to pass, ye might believe.
Cross References

John 13:19

ἀπ' ἄρτι λέγω ὑμῖν πρὸ τοῦ γενέσθαι ἵνα ὅταν γένηται πιστεύσητε ὅτι ἐγώ εἰμι
19
Now I tell you before it come, that, when it is come to pass, ye may believe that I am he.

John 16:4

ἀλλὰ ταῦτα λελάληκα ὑμῖν ἵνα ὅταν ἔλθῃ ἡ ὥρα μνημονεύητε αὐτῶν ὅτι ἐγὼ εἶπον ὑμῖν Ταῦτα δὲ ὑμῖν ἐξ ἀρχῆς οὐκ εἶπον ὅτι μεθ' ὑμῶν ἤμην
4
But these things have I told you, that when the time shall come, ye may remember that I told you of them. And these things I said not unto you at the beginning, because I was with you.

Matthew 24:24

ἐγερθήσονται γὰρ ψευδόχριστοι καὶ ψευδοπροφῆται καὶ δώσουσιν σημεῖα μεγάλα καὶ τέρατα ὥστε πλανῆσαι εἰ δυνατόν καὶ τοὺς ἐκλεκτούς·
24
For there shall arise false Christs, and false prophets, and shall shew great signs and wonders; insomuch that, if it were possible, they shall deceive the very elect.
John 14:28
Read John 14
John 14:30