It seems to be standard practice to consider 'coming to and being accepted by the Almighty' as a very easy, one-step thing. Faith in Jesus is all that's required. But since scripture says the faith OF Jesus, is that different? His faith somehow imputed to us, placed in us? Or faith of a similar magnitude?
What if it's true that the word was actually faithfulness? The same faithfulness displayed by Yeshua is required of us? Not so simple then. That would make sense of knowing that so many 'pray the prayer' but nothing in them changes. It would also help explain why some do change even while doubting since this faithfulness is a gift from I AM in the first place.