It seems a little ironic that he would copy the standard religious formulation. The problem with this approach is that you may devote your life to the wrong bigger thing and then end up in the middle of a "religious" war.
From what i've seen, we all have something we worship, God or not. This entity is perceived by us to be greater and may or may not benefit us. It's like we're wired to worship, only we have different opinions on the deity.
The only thing is life I worship are my kids. They are, consequently, both greater than I and the direct benefit has already been apparent. With continued effort, it is also likely to grow.