Christ clearly stated that the spiritual condition of men is shown in their fruit. A good tree produces good fruit. A bad tree produces bad. It is impossible for a slave of the Devil to bear good fruit. And it is impossible for one who is led by the Spirit of God to bear bad fruit. The disciples of Christ have the fruit of the Spirit which is ‘love, joy, peace, patience, kindness, goodness, gentleness, faithfulness, and self-control” (Gal. 5:13).
Someone once told of a servant girl when asked how she knew she was converted said, “Because now I sweep under the mats.” The unconverted do not care about doing right, for the sake it. The unconverted will act “faithfully” when he is watched. The converted “sweep under the mats” for they believe in the invisible God.
People who are converted are keen to listen to the words of Christ. They take on his manners and interests. They are known by their walk and talk which closely resembles the nature of Christ. Being brought up to maturity they exhibit a spirit of love and truth which can’t help but bear the fruit of God. It is a blessing to have God working in us who believe to bear His righteous fruit for salvation.