The ordinance of baptism by immersion is commanded by the Scriptures. All who repent and believe on Christ as Saviour and Lord are to be baptized. Thus they declare to the world that they have died with Christ and that they also have been raised with Him to walk in newness of life.
Matthew 28:19 NIV
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,
Mark 16:16 NIV
Whoever believes and is baptized will be saved, but whoever does not believe will be condemned.
Acts 10:47,48 NIV
“Surely no one can stand in the way of their being baptized with water. They have received the Holy Spirit just as we have.” So he ordered that they be baptized in the name of Jesus Christ. Then they asked Peter to stay with them for a few days.
Romans 6:4 NIV
We were therefore buried with him through baptism into death in order that, just as Christ was raised from the dead through the glory of the Father, we too may live a new life.