Are any of those Churches honestly serving God? In fact, I challenge you to find even just one that follows The True Scriptures!

It's Pretty Early... so: " This Is Really Gonna Hurt ".

Having spent my entire life In Search For The Truth, in the first half of which examining all of those: Sun Worshiping and indeed ( also ) Sabbath Keeping Churches - I have never found one of them: That Taught The Honest Word Of God, Didn't Defy The Clearly Stated Teachings Of  Biblical Scripture, Were Capable Of True Spiritual Growth Now Moving Forward, or ( even ) Displayed The Real Fruits Of: Obedience, Humility, Repentance, And Love.

Of course, had you studied All Of Those End Time Biblical Prophecies [ Which Fully Apply To All Of Those Who Have Not Been Raptured ], you might have just noticed Even Some Of The Following....

1. God Never Planned On Rapturing Anyone Out Of Their Own End Time Events. 
2. There Are A Whole Number Of Events Which Come After Those Seven Church Eras.
3. We Are Now Within The Process Of Actually Going Through The Third One Of Them.
4. Meanwhile, God's Own People Are Still Living Spiritually Within Babylon!

Who is: " The Harlot In Purple & Scarlet "?

And, consequently, ' The Actual Message That Is Found In Revelation Chapter 18 ' - might prove to be, for you, of some actual value '...

" After these things I saw another angel coming down from heaven, having great authority, and the earth was illuminated with his glory. 

And he cried mightily with a loud voice, saying: ' Babylon The Great Is Fallen, Is Fallen, And Has Become A Dwelling Place Of Demons, A Prison For Every Foul Spirit, And A Cage For Every Unclean And Hated Bird '! 

For All Of The Nations have drunk of The Wine Of The Wrath Of Her Fornication; The kings of the earth have committed Fornication With Her; and The Merchants of the earth have become rich through The Abundance Of Her Luxury.

And I heard another voice from heaven saying: ' Come Out Of Her, My People, Lest You Share In Her Sins, And Lest You Receive Of Her Plagues '. 

For Her Sins Have Reached Up To Heaven, and God Has Remembered Her Iniquities. 

Render to her just as she rendered to you, and repay her double according to her works; in the cup which she has mixed, mix double for her. In the measure that she glorified herself and lived luxuriously, in the same measure give her torment and sorrow; for she says in her heart: ‘ I sit as queen, and am no widow, and will not see sorrow. ’ 

Therefore, her plagues will come in one day—death and mourning and famine. And she will be utterly burned with fire, for strong is The Lord God who judges her. " - Revelation 18:1-8.