Sorry to borrow this title, but it is fitting. This is about the lukewarm Christian (Rev. 3:14-22). These verses are a snapshot for the majority of those that call themselves Christian within the United States of America.
Jesus states that He will spew you from His mouth. There are those that believe that once you are saved you are always saved. This to me is one of two verses directly spoken by Christ that says otherwise.
The way people act through free-will is a direct bearing on where they stand with God. It is made clear in these verses that if you do not tend to your faith and believes that you can be cast out by God. He goes on to say that these people are rich monetarily, but spiritually they are poor. This again reflects those in the US when compared to the rest of the world.
But why are they poor in spirit? Because they are not being taught about God correctly if at all. People need to go to church. People need to read the Bible. People need to learn how to act their faith for most are hypocrites because of their behavior.
As an example, breaking the speed limit. I remember a car passing me going sixty in a forty-five only to see them turn into a church for services a few minutes later. Per Titus 3:1 , we are to obey the laws of the land and thus honor God.
People need to do as Jesus said in Revelation. Either to turn toward God and embrace that they are what they say “Christian.” Or turn from God and no longer call themselves Christian for in actuality they most likely are not and know that they will not be welcome in heaven, and then the eternal life that is beyond Christ’s return.