The Scroll of God

The Bibles we read come from a long line. What once were scrolls written in Hebrew, and words spoken in Aramaic (the gospels) went through the Greek language and were likely Hellenized like most other things. Then there was the Latin. So the Hebrew "sheol" where there was "neither doing nor thought" became first "hades" (Greek) a "place of the dead" and then "inferno" (Roman). Then came Signor Dante with his entertaining tales (in the 1300's). This was after some Norse tribes had brought into the lands their slant on an afterlife, named Helheim, shortened to Hel. And then of course came along (1600's) good King James, whose heart was likely in the right place, it's just by then the culture was saturated with these other (nonbiblical) ideas.

The New Covenant

Contemporary English Version (CEV)
Hebrews 10:39-11:2,6
"...We will keep on having faith until we are saved.. Faith makes us sure of what we hope for and gives us proof of what we cannot see. It was their faith that made our ancestors pleasing to God... without faith no one can please God. We must believe that God is real and that he rewards everyone who searches for him."
Hebrews 10:19,20
"My friends, the blood of Jesus gives us courage to enter the most holy place, by a new way that leads to life! And this way takes us through the curtain that is Christ himself."
Hebrews 6:18-20
"God cannot tell lies! And so his promises and vows are two things that can never be changed. We have run to God for safety. Now his promises should greatly encourage us to take hold of the hope that is right in front of us. This hope is like a firm and steady anchor for our souls. In fact, hope reaches behind the curtain and into the most holy place. Jesus has gone there ahead of us, and he is our high priest forever, just like Melchizedek."
New King James Version (NKJV)
Hebrews 4:16
"Let Let us therefore come boldly to the throne of grace, that we may obtain mercy and find grace to help in time of need."
Hebrews 3:14
"For we have become partakers of Christ if we hold the beginning of our confidence steadfast to the end.."
Hebrews 3:14
Contemporary English Version (CEV)
"We were sure about Christ when we first became his people. So let’s hold tightly to our faith until the end.."
Colossians 1:27
Young's Literal Translation (YLT)
"..to whom God did will to make known what [is] the riches of the glory of this secret among the nations -- which is Christ in you, the hope of the glory,"
Colossians 1:27
Contemporary English Version (CEV)
"God did this because he wanted you to understand his wonderful and glorious mystery. And the mystery is that Christ lives in you, and he is your hope of sharing in God’s glory."
Ephesians 1:13,14,19,20
Young's Literal Translation (YLT) - Amplified Bible (AMP) - (YLT) - (NKJV)
"..in whom ye also, having heard the word of the truth -- the good news of your salvation -- in whom also having believed, ye were sealed** with the Holy Spirit of the promise, That [Spirit] is the guarantee of our inheritance [the firstfruits, the pledge and foretaste, the down payment on our heritage], in anticipation of its full redemption and our acquiring [complete] possession of it—to the praise of His glory".. (it is) "...the exceeding greatness of His power to us who are believing, according to the working of the power of His might, which He worked in Christ when He raised Him from the dead." (Same Spirit which rose Jesus from the grave, is at work in us - "enter His rest" (Hebrews 4:1&11) "recieve the promise" (Galatians 3:14)
**the "seal" and "proof/guarantee" = "because you [really] are His, God has sent the [Holy] Spirit of His Son into our hearts, crying, Abba Father!" - Galatians 4:6, Amplified Bible (AMP)

Will God Lose Lucifer?

~ Colossians 1:20, New King James Version (NKJV)
"..by Him to reconcile all things to Himself, by Him, whether things on earth or things in heaven, having made peace through the blood of His cross."
 ~ Colossians 1:20, Contemporary English Version (CEV)
"And God was pleased for him to make peace by sacrificing his blood on the cross, so that all beings in heaven and on earth would be brought back to God."
~ Isaiah 14:12,11, New King James Version (NKJV)
“How you are fallen from heaven, O Lucifer, son of the morning! How you are cut down to the ground, you who weakened the nations! Your pomp is brought down to Sheol" (translation="the grave") "And the sound of your stringed instruments; The maggot is spread under you, And worms cover you."
~ All the people were born after Adam and Eve and inherited their imperfect nature. (To turn from God in any teeny, tiny way is to turn from Perfection - which is God - and away from Life, which too is God.- So God sent "the Firstborn of all creation" to rescue us with His 'paid in full for all of us, death upon the cross'. His totally innocent death overcoming death.
~ Therefor we get to thank God for His rescuing us from death. Yet also (for a time) we get to thank Him for death (as an impersonal thing that is) because if it hadn't come to be, it would mean we had all been created as robots or (perhaps?) as forever very small children.
- - Perfection makes no mistakes.