Jesus prayed to God before His departure from the world. He prayed for complete unity. He was speaking about his disciples, us, His followers, preachers, apostles, prophets – the church. 
Why does the world not understand the power of God? Because the churches and preachers operate in silos. We are not unified as Jesus intended. There is power in unity. 

Are we preaching Jesus – the same message? Are we unified, not necessarily in methodology, but in our theological discourse? Do we unite regularly and consistently but informally to divide truth? Do we have the same agenda? Are we competing and vying for personal glory? 

The world laughs at us and says, why will I follow Jesus when His current followers are disjointed? We have to tear down walls within and externally. Are we operating in silos or in unity? Jesus prayed for our unity and for God’s power to be known through our unity. The impact of the church in the world relies on our unity in Christ. Dr.J.

John 17:23 NIV I in them and you in me—so that they may be brought to complete unity. Then the world will know that you sent me and have loved them even as you have loved me.