A friend writes:
It is very simple: if you want to be a disciple of Christ, do what He asks. If you don't, enjoy whatever life you choose for yourself while you can. Believe the words of God as they are written, or do not.
That's exactly the point, and it is exactly that simple.
Remember: to become as a little child means to become uncritically believing of God's words at face value, just as a little child uncritically believes his father's words at face value.