"How is it that you think that humanity can give itself life?"
I don't know if ProdigalSon says that.
I think the difference (imo) is Jhsh showed us the way. We must then accept the way he made for us. So it's more than believing in Jhsh. It is trusting if we proceed to follow that way that was fashioned for us then Jhsh is there always to assist, but not to do it for us.
In fact Tammy and PtodigalSon might believe similarly, but from two very different perspectives. In my opinion.