Humility
In the parable of the prodigal son (Luke 15:11-32), Jesus teaches us about returning to our Father after departing in search of sinful fulfillment. All we who sin recognize ourselves in his wallowing in the pig slop of iniquity.
We rejoice to watch him walk back to his father with repentance in his heart and are encouraged when his father meets him and accepts his apology.
God calls the prodigal son in all of us to come without delay and be redeemed. But the proud man would never come back and beg mercy; we must be humble.