Not accepting the good news of the kingdom is not news to anyone. Jesus said that would happen:
John 15:17 “These things I command you, that you love one another. 18 If the world hates you, you know that it has hated me before it hated you. 19 If you were part of the world, the world would be fond of what is its own. Now because you are no part of the world, but I have chosen you out of the world, for this reason the world hates you. 20 Keep in mind the word I said to you: A slave is not greater than his master. If they have persecuted me, they will also persecute you; if they have observed my word, they will also observe yours. 21 But they will do all these things against you on account of my name, because they do not know the One who sent me. 22 If I had not come and spoken to them, they would have no sin. But now they have no excuse for their sin. 23 Whoever hates me also hates my Father. 24 If I had not done among them the works that no one else did, they would have no sin; but now they have both seen me and hated me as well as my Father. 25 But this happened in order to fulfill the word written in their Law: ‘They hated me without cause.’
When a person joins the true church, they can no longer believe what seems to be true to himself, but have to learn the truth. He, too, cannot practice what he wants, but he has to respect God and the Son of God by obeying the biblical principles. Since in false Christendom anyone can believe and practice what they want, not everyone has the right attitude to qualify as a true disciple of Christ. Note that when a person is not in God's people it is not because that person does not want to, but because he does not have the right attitude that is needed, so God does not attract him to his true people:
John 4:23 Nevertheless, the hour is coming, and it is now, when the true worshippers will worship the Father with spirit and truth, for indeed, the Father is looking for ones like these to worship him.
The false religious leaders and theologians encourage that disorder that exists in Christendom, because they themselves are neither there nor let others in, like Pharisees (Matt.23:13), but they have a lot of profits from their religious businesses, so they practically force their followers to be spiritually lost... as the saying says: "a troubled river fishermen's profit".
Unfortunately, this means that in order to qualify to be accepted by God in the people who will inherit the kingdom, it requires too deep changes that not everyone is willing. Some will even try, but fail to:
Luke 13:23 Now a man said to him: “Lord, are those being saved few?” He said to them: 24 “Exert yourselves vigorously to get in through the narrow door, because many, I tell you, will seek to get in but will not be able. 25 When the householder gets up and locks the door, you will stand outside knocking at the door, saying, ‘Lord, open to us.’ But in answer he will say to you: ‘I do not know where you are from.’ 26 Then you will start saying, ‘We ate and drank in your presence, and you taught in our main streets.’ 27 But he will say to you, ‘I do not know where you are from. Get away from me, all you workers of unrighteousness!’ 28 There is where your weeping and the gnashing of your teeth will be, when you see Abraham, Isaac, Jacob, and all the prophets in the Kingdom of God, but you yourselves thrown outside. 29 Furthermore, people will come from east and west and from north and south, and will recline at the table in the Kingdom of God. 30 And look! there are those last who will be first, and there are those first who will be last.”
John 6:43 In response Jesus said to them: “Stop murmuring among yourselves. 44 No man can come to me unless the Father, who sent me, draws him, and I will resurrect him on the last day. 45 It is written in the Prophets: ‘They will all be taught by Jehovah.’ [Is. 54:13]. Everyone who has listened to the Father and has learned comes to me".
Notice in all of Jesus' teachings how important the Father is to salvation...but in Babylonian Christendom with all its confusion, they don't respect the Father of Jesus.