The Church has become mixed with the world so much that you can’t tell the difference any more between the Church and the world. In the Book of James Jas 4:4 it says (You adulterous people, don’t you know that friendship with the world is hatred toward God? Anyone who chooses to be a friend of the world becomes an enemy of God.)
So has the Church become an enemy with God. I would say that the Church who tries to look like the world and play the music of the world and acts just Like the world does most certainly has become an enemy with God. God will spit this kind of Church out of His mouth. He is looking for a Church that is with out Spot or blemish. Not a sinful worldly Church. Jesus warned the Church in the Book of revelation about this. He said if you do not repent, I will come and take the lamp stand out of it’s place. Revelation 2:5. meaning He will take his Spirit out of the Church leaving it a dead Church. I do believe that this is a picture of what will happen to us if we as Christians choose to disobey Him again and again and are unwilling to repent. He will take His Holy Spirit out of our hearts, and give us over to the sin that we have chose over His Love. We can’t be saved today and lost tomorrow, but over time if we do not repent we will loose the Spirit Of God. That is why the Bible tells us to not grieve the Holy Spirit. If any one choosees sin over Jesus, even though they were once saved born again believers, God will count the righteousness that they have done against them. He will not remember the righteous things they had done, and they will be once again in danger of the Fires of Hell. One sertainly can loose salvation after attaining it. Sin separates us from God, because God has a Zero tolerance for sin.
Eze 18:24 (“But if a righteous man turns from his righteousness and commits sin and does the same detestable things the wicked man does, will he live? None of the righteous things he has done will be remembered. Because of the unfaithfulness he is guilty of and because of the sins he has committed, he will die.)