It is BEST to read the PDF and watch the video about "Covenants", first which will help you get a better understanding about baptism.

What is the purpose of water baptism in the New Covenant? Many Christians today cannot give an answer using scripture on the purpose of baptism. Many say that it is just an outward showing of our faith. The truth is we cannot read that statement and the early Christians did not believe baptism was just an outward showing of our faith. Watch the video and read the PDF below.