What Did They Believe ?
 

And it came to pass that, while Apollos was at Corinth, Paul having passed through the upper coasts, came to Ephesus :and finding certain disciples,
He said unto them ,Have ye received The Holy Ghost since you believed ? And they said unto him ,We have not so much heard wheter there be any Holy Ghost. ACTS 19: 1,2
Ok here we have Paul finding certain disciples ,who have believed in something but had not been Spirit Filled.
What did these disciples believe ? It seems to me that these were disciples of Apollos who only knew the message of John The Baptist .
I don't see these as believers who had placed faith in Jesus Christ.
What did these disciples believe ?

The message of John was repentance.