As it is with all sin, rebellion originates within the heart. Long before it manifests itself in the individual’s actions, it finds life by taking root within his heart. The Lord described a rebellious generation by saying that they were “a generation that set not their heart aright, and whose spirit was not stedfast with God.” A man with a wicked heart and the wrong spirit cannot enjoy sweet fellowship with the Lord. As rebellion takes root in his heart, the rebellion pushes out the desires for prayer and for God’s word. Humility is crowded out because of pride and self-will to the extent that a man justifies, perhaps even with scripture, his rebellious spirit. His once soft heart becomes hardened because of the deceitfulness of sin.
Our previous studies revealed that the word kind is connected to a term suggesting family relationships. Therefore, today’s passage associating kindly with brotherly love makes perfect sense. The book of Romans instructs believers to be “kindly affectioned one to another.” By being kindly affectioned, believers will naturally exhibit “brotherly love” toward each other. The Bible reveals God as the Christian’s Father. This relationship indicates that each believer is related as a part of the same family, the family of God. How should family members treat other family members? The context of today’s passage reveals that believers should prefer others before themselves (Romans 12:10), distribute to the necessities of other saints (Romans 12:13), and give themselves to hospitality (Romans 12:13). In other words, believers should treat other believers as members of one’s family. As many Christians soon find out, the relationships enjoyed between fellow believers will frequently be closer than those enjoyed with blood relatives.