There is reason to believe that when Jesus comes the second time he will emit a brightness equal to or greater than the sun. But all this is reserved for His second coming. Even the Christian community suffers schisms, not only in the churches, but also in government.
Unity is always a desirable goal, but in the church it is as elusive as perfection.
Just as the dawn separates the day from the night, God's word is always in the process of separating Godliness from wickedness, truth from lies, revealing corrupt ideals and distorted values in every stage of our spiritual development. We all lie exposed in the light of the word of God. Moreover, there is an interesting analogy of this in Gen.38. We know that four women are named in the genealogy of Christ. One of these is named Tamar.