But isn't it inevitable that we all walk a different path to God? We are all born in different ages of the world, with different world views, into different circumstances and experiences, and with different capacities. Even in my own Catholic tradition with its pretty tightly controlled dogma, the ordinary people all have very different images and understanding of who or what God is and how to reach Him. The field is even wider in the Protestant communities, because they range more widely in their beliefs as well as there being differences in what people understand by those beliefs.
Those of us who seek God are like people climbing a mountain - there are different routes up it, some easier and some harder .... and some routes go only part way up. But as you get to the top these routes all converge, and they converge on that Person of God that relates to human beings. It matters little that folks may well have different concepts or names for Him - and indeed it is impossible to encase Him in human concepts. Even the most orthodox Christian will find that God is not what they expected, but far, far more. Some of us will have walked with Him all the way up, but some will only meet Him at the top. Certainly, introduce Him to folks we meet at the bottom, or on the way up, but we have to bear in mind not just the path we are on ourselves but understand that the path many are on has not been the same as ours to that point and it may not be as simple as jumping from one route to another. In any case, I am quite capable of following my own route badly with a map I've misread and leading others astray because of my own limitations.
I guess my feeling is that if I see folks going up rather than downhill, then they are getting closer and closer to Him and that is good - they may well express that very differently themselves of course. I think bringing Christ to others is important, but it's important too to understand that He's the one who does it through us - we mustn't stand in His way, particularly if he's playing a long game with someone for example, or choosing a different route for them, as I think is very often the case.
Personally, I don't find rational persuasion very helpful in making solid what I believe, though of course many do. For me, it is more heart than head, and very much my experience of God's presence within me, without which I'd have long ago been lost in a solipsistic darkness.