3 In the name of Jesus Christ I ordain you to be a priest, (or, if he be a teacher) I ordain you to be a teacher, to preach repentance and remission of sins through Jesus Christ, by the endurance of faith on his name to the end. Amen.
Men are ordained to the priesthood with a call to teach. We are all teachers. And what we are to teach is repentance, baptism, and enduring to the end in faith. The gospel really is simple.