Today in church some words from the Hymn “In Humility our Savior” stuck out to me.  The verse is the end of the second verse and reads as follows:

…Then, when we have proven worthy
Of thy sacrifice divine,
Lord, let us regain thy presence;
Let thy glory round us shine.

“When we have proven worthy” stuck out to me.  I thought to myself how none of us are really worthy of Christ’s sacrifice, but he did it for us anyways and it is through his Grace that we are saved.  I decided to look at the scriptures and see what they have to say. 

I looked in Romans, chapter 10 verse 4 to start with, which reads:

For Christ is the end of the law for righteousness to every one that believeth.

According to this scripture alone it appears that all one needs to do is believe in Jesus since he’s the end of the law to be saved. 

The next scripture that came to mind was James 2:19 that states the devils also believe in God.

So if the Devil believes in God and belief is all that one needs why then isn’t the Devil saved?

The answers are found in the Bible and the Book of Mormon.

Later in Romans 10:10 we read:

For with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation.

It appears that there is a difference between merely believing in God and believing with one’s heart. 

In the Book of Mormon in 2 Nephi 2 we read how our hearts should be in order to have the type of belief that will result in salvation.  Verses 6-10 read as follows:

6 Wherefore, aredemption cometh in and through the bHoly cMessiah; for he is full of dgrace and truth.

  7 Behold, he offereth himself a asacrifice for sin, to answer the ends of the law, unto all those who have a broken heart and a contrite spirit; and unto bnone else can the cends of the law be answered.
  8 Wherefore, how great the importance to make these things known unto the inhabitants of the earth, that they may know that there is no flesh that can dwell in the presence of God, asave it be through the merits, and mercy, and grace of the Holy Messiah, who blayeth down his life according to the flesh, and taketh it again by the power of the Spirit, that he may bring to pass the cresurrection of the dead, being the first that should rise.
  9 Wherefore, he is the firstfruits unto God, inasmuch as he shall make aintercession for all the children of men; and they that believe in him shall be saved.
  10 And because of the intercession for aall, all men come unto God; wherefore, they stand in the presence of him, to be bjudged of him according to the truth and choliness which is in him. Wherefore, the ends of the law which the Holy One hath given, unto the inflicting of the dpunishment which is affixed, which punishment that is affixed is in opposition to that of the happiness which is affixed, to answer the ends of the eatonement
Verse 7 is the one that stands out to me as what the real difference between believing in Jesus is and how our hearts should be to have belief unto salvation.  Broken hearts and contrite spirits.  In other words, humility. 
So to answer the question of why isn’t the Devil saved even though he believes I would say the scriptures are pretty clear.  The Devil doesn’t have humility and doesn’t believe with his heart.
I pray that we can all have this type of humility to accept Jesus into our hearts, which will result in salvation.