Berean Standard Bible (BSB)
I am telling you now before it happens, so that when it comes to pass, you will believe that I am He.
World English Bible (WEB)
From now on, I tell you before it happens, that when it happens, you may believe that I am he.
Strong's King James
Now{G575}{G737} I tell{G3004}{(G5719)} you{G5213} before{G4253} it come{G1096}{(G5635)}, that{G2443}, when{G3752} it is come to pass{G1096}{(G5638)}, ye may believe{G4100}{(G5661)} that{G3754} I{G1473} am{G1510}{(G5748)} he.
The F.O.G *
(19) From now, I tell you before it happens so that when it happens you may believe that I AM.
The F.O.G Message *
Young's Literal Translation
From this time I tell you, before its coming to pass, that, when it may come to pass, ye may believe that I am he;