Father, Son, and Holy Ghost

The seventh chapter of the book One Lord...One Faith is titled "The Nature of God" has scripture after scripture on why Father, Son, and Holy Ghost being the same being is not scriptural. He uses several versions of the Bible to help illustrate. He also includes his own commentary on the subject. I have included some of them below. They show Jesus talking to the Father or about the Father doing something or about sending the Holy Ghost. It seems clear that these are separate beings that are show to be together in the same place at the same time.

Luke 10:21-22
Matthew 26:39, 42, 44
Matthew 19:16, 17
Luke 2:49, 52
John 7:16-17
Acts 7:55-56
John 14:16-17
John 14:25-26
John 15:26
John 16:7-8

Obedience Is the Armor That Will Protect Us from Evil

Found this in the last paragraphs of an article in the January 2008 Ensign by William D. Oswald Second Counselor in the Sunday School General Presidency - Obedience: The First Law of Heaven

He quotes President Boyd K. Packer:
“By following the rules,” said President Packer, “you will never make a serious mistake … either while you are on your mission or thereafter without being warned. You will never take the wrong road, you will never go around the wrong bend, or make the wrong decision without your having been warned. That pattern is the pattern of the Latter-day Saint. You were confirmed a member of the Church, and you had conferred upon you the gift of the Holy Ghost to be a guide and a companion to you.”2

Certainly Latter-day Saints believe this is true for the prophet leading the church. Do we believe this for us leading our families? And if we do, why are we not more obedient?