Jesus and His disciples were baptized to show their commitment and obedience to following God's direction and purpose for their lives. Baptism is a symbol of a person's belief that with Christ's death and resurrection they receive a new life honoring Jesus as their savior and following Jesus as the Lord of their life. This public act of obedience is a great way to celebrate your faith in Jesus and to follow Christ's example set before us. 

2 Corinthians 5:17