Could you imagine how many people would not be able to enter the kingdom of heaven, merely because of a disagreement over the translation of a single word of Scripture? That sounds completely absurd, doesn't it? I believe God often extends more grace to us than we think He should or that we deserve. And grace is grace because it is free and not something which one has to earn, and it is given even if you don't believe in unicorns.
I always thought the gospel we should spread is salvation through faith in Jesus.