Parallel
John 13:19
Patriarchal Greek New Testament (1904) · Berean Standard Bible
ἀπ᾽ ἄρτι λέγω ὑμῖν πρὸ τοῦ γενέσθαι, ἵνα ὅταν γένηται πιστεύσητε ὅτι ἐγώ εἰμι.
I am telling you now before it happens, so that when it comes to pass, you will believe that I am He.