I believe there is one God behind all the major religions of the world.
He speaks to different people in different languages, different cultures, different places, different time periods and different context.
Why would we expect the same message to be for everyone at the same time.
What's true today can be untrue next year. What's untrue ten years ago might be true today.
There is still one God for many people. And He doesn't tell everyone the same thing. Just like you don't tell all your children the exact same thing at the exact same time. Context matters.
Whatever you were told is what you needed to hear for you. That does not mean everyone else who got a different message is going to hell.