Hebrews 4

Paul explained to the Hebrews that -

"...the word of God is quick, and powerful, and sharper than any two-edged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart." (New Testament Hebrews 4:12)

Paul makes it very clear what the word of God or the scriptures will do for us and our faith in Christ. I doubt Paul could have used any better description than a two-edged sword that would that the saints understood could quickly cut our very soul.

One of the points he makes is the word of God is "quick". According to Merriam-Webster, "quicken" means to make alive. I see "quick" to mean make alive or enlighten. But not only make alive but dividing asunder. Joseph Smith's translation clarifies -

"... of body and spirit..." (New Testament:Hebrews 4:12)

Which suggests in my mind the seperation of the body or flesh and the spirit or the things of this world and the things of God.

To Ezra Thayne and Northrup Sweet, the Lord said -

"...open ye your ears and hearken to the voice of the Lord your God, whose word is quick and powerful, sharper than a two-edged sword, to the dividing asunder of the joints and marrow, soul and spirit; and is a discerner of the thoughts and intents of the heart." (Doctrine and Covenants Section 33:1)

The Savior's words to these brethren help us understand that "the Lord your God" is the "discerner of the thoughts and intents of the heart" which maybe somewhat confusing as the translations of Paul's writings appear to me that he is suggesting that "the word of God" is the discerner of the thoughts and intents of the heart".

Is there any question why Paul admonishes Timothy that it is -

"...the holy scriptures, which are able to make thee wise unto salvation through faith which is in Christ Jesus." (New Testament 2 Timothy 3:15)