Jesus told his disciples that he will return only once and that when he does, after a time of great tribulation, it will be visible to everyone and be followed by immediate and dire consequences for those unprepared and for those who were adversaries of God.
The followers of Jesus were convinced who he was and why his task given to them was so important. They continued bringing without letup teaching and declaring the good news about the Christ, Jesus, and asked their pupils and converted followers to do so too. Coming closer to the end times it is even more important because the world shall not be interested in God and many brought away from the Only One true God, by false preachers and mega churches.
There are people who want us to believe god had to purify Himself but that we ourself do not have to do any works any more or can do whatever we want because God brought salvation to us by His death, though God can not die. By such misleading teaching those 'preachers' are fooling not only themselves but are taking the opportunity away for others to find the Real God of gods and the entrance to the Kingdom of God.
Unmasking anti Jehovah sites and people 