We preach the exact thing that the Disciples, and Paul preached in the book of Acts. Not watered down or changed by man. Acts 1:2, Acts 2:38, Acts 8:14-17, Acts 10:44-48 and Paul preached the exact same message in Acts 19:1-6.
Unauthorized changes started with Nicolaitan's 55 AD, by Church Fathers 150 AD, Emperor Constatine, (a worshipper of the sun), Nicene Council 325AD.