One of the first things Christians coming out of the Spiritual Dark Ages of Denominationalism which began in 370 AD will discover is the fact that if the wisdom of God about the Kingdom of Heaven had not been hidden that evil men could never have fought against God and there never could have been spiritual warfare!
The "wisdom from above" James 3:13-18 teaches that qualified teachers who understand revelation can now start teaching that the Lord Jesus Christ has all authority in heaven and on earth and that He has resumed His reign over the earth from heaven, with the Perfect Law of Liberty!