How's that workin'? There will never be unity in the churches. For one, there are too many tares. You can't have unity between tares and wheat.
Why not? It makes more sense than believing somehow magically all the tares will vanish and the wheat will all attain unity among themselves. The Lord told us there would always be tares.
The unity of all the disconnected people worldwide will be on a spiritual level. It will be a state of maturity attained in Christ and in sound doctrine. In that sense I do believe God's word is very important. But even in churches that say they "go back to the Bible," a lot of them are very far off course.