Baptism is an important step of obedience that shows others that you have personally trusted Jesus for your salvation. Every person who believes in Jesus should be baptized. Having decided to trust Jesus alone for their salvation, they follow Him in baptism as a symbol of their new life in Him.
"Those who accepted his message were baptized, and about three thousand were added to their number that day.” (Acts 2:41)
“Therefore go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit...” (Matthew 28:19)