Where Jesus’ influence makes men into real men, their life becomes genuine and pure. It shines into the darkness of the world around and unmasks what is false and untrue—what is trying to hide. But the light which Jesus kindles is not exhausted by just making a situation clear. Cold light has no part in the kingdom of God. What matters is to live in God’s heart and from God’s heart. As with the sun, the brightness of His being is inseparable from life-kindling warmth.

- Eberhard Arnold Studies in the Sermon on the Mount