The Bible teaches us that the ordinance of Baptism is to be done in recognition of each distict person of the Trinity. Three persons, one name: God. In baptism a believer is expressing obedience and submission to God. This verse puts the Son and the Spirit in equal terms with the Father. Baptism is a great way to show obedience and alligience to God. It cost the believers a lot to be 'immersed' back in the day when religious liberty was only a dream.