While the common play for contemporary wisdom and even many religions is to work on the external, God, brings change from the inside. God works inside out while so many others work outside in.
This has everything to do with the pervasiveness of the problem and the powerful solution.
The problem before it is external it is internal. Jesus taught that the evil deeds come from within “There is nothing outside a person that by going into him can defile him, but the things that come out of a person are what defile him.”” (Mark 7:15) This defilement reservoir is the human heart. And it is a real problem: “The heart is deceitful above all things, and desperately sick; who can understand it?” (Jeremiah 17:9) Every single person, without exception is infected with the deadly disease of sin.
Yet, God reaches through the darkness of our sinful souls and spoiled hearts to change us at the core. To change us from deep within.