The genius of God's plan is obvious. If we recognize that we are all members of the same family, if we acknowledge that God desires to hold us in a single peace then, ideally, we will stop fighting with each other and destroying one another and instead begin standing with one another and working together to bring people to Christ and to become an answer to prayer for those who cry out to God for help.
However, if your family is like my family, your day-today operation is not marked with constant good will and cooperation. Parents can disagree with each other, or the children, or the youngsters with each other. There are so many possibilities for dissension - goals will vary, opinions often differ and wills may clash. I think the reason for the popularity of the television cartoon "The Simpsons" is that it lays bare some of the battles which are fought in the arenas of many homes. Apparently there is some comfort in knowing that others experience problems similar to one's own. But if love is at the heart of our relationships, and forgiveness is liberally applied, there is still a family unity and loyalty which acts like a glue – unity holds family members together even when they are apart and loyalty brings them together again at times of crisis or joyful celebration.
The church as the family of God has characteristics similar to other family units but with infinitely more possibilities for disagreement and dissension. It is no wonder then that Paul saw the primary task of the church as one of reconciliation: "All this is from God, who through Christ reconciled us to himself and gave us the ministry of reconciliation. So we are ambassadors for Christ, God making his appeal through us" (2 Corinthians 5:18-20).