Please I have no answer to the preachers who do not preach the gospel of the kingdom of God. But what I know is this all disciples that Jesus Christ called, He sent them to go ye an preach the gospel of the kingdom of God to every creature for a witness. Even Paul Apostle that later had encountered with Him, he also go ye to preached the gospel of the kingdom of God. But understand this there were call preachers and also career preachers. Call preacher will preach the gospel of the kingdom of God, while the career preacher will preach about vanity. For whosoever want to know the gospel of the kingdom of God, visit this website: http://eschatology.name.ng/blog/2018/08/22/welcome-to-iwwm/