I read Romans chapter 2 for years before the light went on with an important verse one day – 2:4b. “The kindness of God leads to repentance” (NASB). A powerful force is released in the lives of others when we do a small thing – when we show the kindness of God in a practical way, even when that kindness is done in a seemingly small way.
Your acts of kindness release a desire in those served to repent. The problem we face in evangelism is we can try to talk people into changing their hearts when God isn’t initiating the change. That’s a tough sell. I love this verse because it promises that what we do leads to a “radical change” as the Message puts it.