I believe Lewis hit that nail right on the head. It is important that we understand humility because as James 4:6 says, “God opposes the proud but gives grace to the humble.” That message is repeated word for word in 1 Peter 5:5, then Peter follows that up by instructing us, “Humble yourselves, therefore, under God’s might hand.” God sees humility as so important that he repeated that message so that we could not miss it. The same message showed up in the Sermon on the Mount. Jesus said, “Blessed are the poor in spirit” in Matthew 5:3, meaning those who are humble enough to see and admit their own poverty of soul. The kingdom of heaven, Jesus said, belongs to humble people.
The other comment Lewis made that struck me was that the true humble person will be a delight for other people to be around. He will be that drink of water in the desert, for encounters with him will always be encouraging and refreshing. The humble person will be interested in other people because he is not absorbed in himself. With nothing to prove he is free to listen and to care about others. And every human on the planet longs to be listened to and cared about, which is to say they long to be loved. Though we often don’t think of it in these terms, Lewis was essentially saying that without real humility there is no real love. True love can only exist in a truly humble person. Perhaps that in part of the reason why God is opposed to the proud but gives grace to the humble.