John 14:29

And now I have told you before it come to pass, that, when it is come to pass, ye might believe.

Now I have told you before it happens so that, when it happens, you may believe.

And now I have told you before it come to pass, that, when it is come to pass, ye may believe.

`And now I have said `it' to you before it come to pass, that when it may come to pass, ye may believe;

And now I have told you before it happens, so that when it does happen, you will believe.