Jesus Christ taught that we must be baptized by immersion. He set the example Himself by being baptized to "fulfill all righteousness."
We are baptized by someone who has God's priesthood authority for the remission of sins. We are also baptized to become members of the Church of Jesus Christ, and to enter the kingdom of God.
Through the ordinance of baptism, we make a promise, called a covenant, with God. We promise to accept Christ, to become His followers, and to keep His commandments to the end of our lives. In return, our Heavenly Father promises to forgive our sins and let us return to live with Him, provided we keep our covenants.
The act of baptism is making a covenant, or promise, to our Heavenly Father commiting to Him that we accept Christ, take upon ourselves the name of Christ and follow His example. In return, our Heavenly Father promises to bless us and forgive us, as we are obedient and repent, and in the end, let us return to live with Him. We are baptized to become members of the church because it is imperative in order to return to live with our Heavenly Father. It is a cleansing of the spirirt for the remission of sins. We wish the best for new members, and the joys of being baptized are unforgetable.
We follow the example of Jesus Christ, who was baptized by immersion by John the Baptist. Being baptized is a symbol of faith, as it represents the burying of old sins, old ways and old habits, and taking on the name of Jesus Christ. We are "buried" in the water, which represents the environment of the past, and therefore we must be lifted up in order to survive. That lifting up represents our being lifted up by Christ, out of the past, and into the great promises and blessings of being one with Christ. When we come out of the water, we are symbolically a new person in Christ.