Ya, throw the book away . . .he's not at all accurate.
"If" his theory is true, then all newborn babies that die are going to hell. Secondly, the changing of a name in Scripture isn't about those being close . . .Paul was NOT close to Christ . .he didn't even know him. All he knew of him, was what the church taught him . . .the intimacy didn't come until later in the relationship.
For me, the reason there was a changing of the name . . .is God's way of a baptism . . .it's an outward manifestation of an inward transformation. Each situation reveals there is a change in the nature of the person . . .with the change of nature, comes a change in the identity . .or name.