1. Baptism is a sacrament of the new testament, ordained by Jesus Christ, not only for the solemn admission of the party baptized into the visible Church; but also to be unto him a sign and seal of the covenant of grace, of his ingrafting into Christ, of regeneration, of remission of sins, and of his giving up unto God, through Jesus Christ, to walk in newness of life. Which sacrament is, by Christ's own appointment, to be continued in His Church until the end of the world.
The Westminster confession is Calvinist, which means it includes many things a lot of us reject.
FWIW, the Southern Baptist ‘confession’ is:
“Christian baptism is the immersion of a believer in water in the name of the Father, the Son, and the Holy Spirit. It is an act of obedience symbolizing the believer’s faith in a crucified, buried, and risen Saviour, the believer’s death to sin, the burial of the old life, and the resurrection to walk in newness of life in Christ Jesus. It is a testimony to his faith in the final resurrection of the dead. Being a church ordinance, it is prerequisite to the privileges of church membership and to the Lord’s Supper.”
Also, many Baptists and many independents completely reject the idea of a ‘confession’. IAW the original topic of this thread, many ‘general baptists’ (the uncalvinist ones) reject creeds because it is just one more layer between us and the truth found in scripture. If God valued systematic theology, He could have provided us with a text. I think scripture is evidence that he values instead a humble heart that wants to learn OF Him FROM Him.
That doesn’t mean teachers cannot help, but only with the understanding that they are mortal and fallible as well.