Do baptist and Christian believe the same thing?

Answer 1

Of course! A Baptist is just a specific set of doctrines in the faith. A denomination, like Methodist and Protestant. As long as the basic belief that Jesus Christ is the Son of God, who died and rose as penance for our sins, is upheld, then one is a Christian.

Answer 2

Yes, they both believe in one God.

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Basically yes, Baptists agree with the basic Christian doctrines but separate themselves in that they believe that only Christian believers should be baptized (called "believer's baptism") and that this baptism should occur by whole body immersion, a practice they trace back to the early Church.