The expression "inviting Jesus into your heart"
is not biblical.
My understanding of "accepting Jesus/God" whomever is to simply acknowledge that God is a part of us.
There is a part of me that says, "Beanie, hold on. Take a breath. Read that again. Is that really what you want to say? Isn't that harsh? Isn't what you are saying done out of spite, rather than to edify?" And I look, and I think, yeah, you're right...grumble grumble...and hit the delete key.
That's not me. That's God. I know that's God.
And I know the difference between what I want, and what God wants, when what I want, even if the desire is great, is not loving.
I wholehearted agree that you are not saved by saying a prayer!!!! You don't invite Jesus into your heart, in the way we think of it, and in doing so, save yourself. You simply acknowledge God's presence that has always been in it. You can squash the voice by being cruel and not caring, not unlike the way gymnasts or dancers build up callouses. Or you can nurture it, and become more in tune with it, hear it more clearly.
But there are so many Christians who look up at the clouds, saying, "God??? Are you there????" as if God went bowling on Neptune, and isn't everywhere all the time. God is a part of your very soul, knows your thoughts, knows you better than you know yourself, as much a part of you as your very breath, and pulsing blood. It's what Buddhists mean when they say that if you see the Buddha pass you on your path, kill him. The Buddha isn't outside. It's inside and outside. You are the Buddha, and everything around you the Buddha. If you think The Buddha is outside of you only, and you are not the Buddha, you don't understand.
Change Buddha with God and I believe that it is the same concept.
So, when people say that their heart is evil, I wonder who it is that lives within them. If we are temples for the HS, how is it that evil lives inside and God lives outside?
That is why we say "Namaste": I bow to the God within you.