From the LDS perspective, the priesthood is essential to our faith and to the LDS experience. We believe that the original and the restored Church of Jesus Christ required authority given by God in order to teach, baptize, and conduct other ordinances in the name of God. It is not enough to want to serve or to feel a call–one must be called by those having authority from Jesus Christ, just as Peter and other disciples were called by Christ and Hus authorized representatives. Priesthood authority was essential for the Restoration and is essential for the daily operations of the Church. At a personal level, members can receive priesthood blessings from priesthood holders who may be the father in a family, missionaries, a bishop, or others. These priesthood blessings, using the Old and New Testament concept of blessings by the laying on of hands, can be for healing, comfort, and guidance. For many of us, priesthood blessings have been an important part of our lives and somethings that we are deeply grateful for.
Here’s a brief Mormon Messages video about the priesthood.