Dear April Rose,
As you are seeming to say, I too, believe that Christ is truly the savior of the world. Our salvation is 100% His work. And since it is 100% His work, how can He fail? He can't. For that reason, mankind's salvation is assured.
However, our salvation is a process (pathway) that Christ takes us through. It also has an order: the Elect are first (First-Fruits) in this age and then all others in the final age.
Judgment is a necessary part of the pathway to salvation.
Isa 1:27 Zion shall be redeemed with judgment, and her converts with righteousness.
"Fire" is a spiritual symbol for the Christ’s judgment. Everyone will be baptized with the Holy Spirit AND with fire.
Mat 3:11-12 I indeed baptize you with water unto repentance: but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Spirit, AND with fire: Whose fan is in his hand, and he will throughly purge his floor, and gather his wheat into the garner; but he will burn up the chaff with unquenchable fire.
Mark 9:49 For every one shall be salted with fire, and every sacrifice shall be salted with salt.
1Cor 3:13-15 Every man's work shall be made manifest: for the day (the Day of the Lord)
shall declare it, because it shall be revealed by fire; and the fire shall try every man's work of what sort it is. If any man's work abide which he hath built thereupon, he shall receive a reward. If any man's work shall be burned, he shall suffer loss: but he himself shall be saved; yet so as by fire.
Judgment is a necessary because our Old Man (carnal nature) must be destroyed from within us. The Lake of Fire is the spiritual symbol used in the book of Revelation to represent that judgment.
Rev 20:14-15 And death and hell were cast into the lake of fire. This is the SECOND DEATH. And whosoever was not found written in the book of life was cast into the the LAKE OF FIRE.
Most of the world will be judged in the Lake of Fire. However, for Christ's Elect (those have been chosen from the foundation of the world), they will be judged now in this present age before they physically die. They are the First-Fruits of Christ's harvest of mankind.
1Pe 4:17 For it is the ripe time for the judgment to begin with the house of God; but, if first with us, what shall be the end of them who yield not unto the glad-message of God?
Since the Elect are FIRST to experience the death of their Old Man, it can be said that they experience the FIRST death. In the final age, all others will experience the SECOND death in the Lake of Fire. The Elect are first and everyone else is second.
Scripture says that BOTH the judgment of the Elect in this age and the judgment of those cast into the Lake of Fire is a time of GREAT tribulation:
Here is the verse which speaks of the judgment of the Elect:
Mat 24:21 For then shall be GREAT TRIBULATION, such as was not since the beginning of the world to this time, no, nor ever shall be.
Here is the verse which speaks of the judgment of the lost who are cast into the Lake of Fire:
Rev 7:9 After this I beheld, and, lo, a great multitude, which no man could number, of all nations, and kindreds, and people, and tongues, stood before the throne, and before the Lamb, clothed with white robes, and palms in their hands... 13 And one of the elders answered, saying unto me, What are these which are arrayed in white robes? And whence came they? 14 And I said unto him, Sir, thou knowest. And he said to me, These are they which came out of GREAT TRIBULATION, and have washed their robes, and made them white in the blood of the Lamb.
In the end, all mankind will be saved through judgment and made righteous (white robes):
Isa 26:9 With my soul have I desired thee in the night; yea, with my spirit within me will I seek thee early: for when thy judgments are in the earth, the inhabitants of the world will learn righteousness.
Here is an interesting verse:
Isa 66:16 For by FIRE and by his SWORD will the LORD plead with all flesh: and the slain of the LORD shall be many.
Here is my literal translation: For by judgment and the Word of God, the Lord will plead with all mankind: and the slain of the Lord (the Old Man) will be many (all mankind).
All the prophetic scriptures that speak of death and destruction are speaking about the judgment of our Old Man. That judgment starts when Christ comes to an fallen away believer (who has only received the Early Rain of the Spirit) a "second" time. This event is the second coming of Christ when He comes with the Latter Rain of the Spirit (Baptism of the Holy Spirit) and with judgment for the Old Man (FIRE). It is a spiritual event within a person and cannot be seen with human eyes. It is the time of "conversion" and is when the Day of the Lord begins.
The Day of the Lord is when Christ reigns from within an individual over their Old Man, whose time of judgment has come. This judgment lasts for a "thousand years".
Rev 20:4 And I saw thrones, and they sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived and reigned with Christ a thousand years.
The "thousand years" is a spiritual term and is not literal time. It is understood this way: 10x10x10. Ten is the number which represents the completeness of our flesh (our carnal nature). Three is the number which represents a complete spiritual process. The spiritual process in this case is the judgment of our Old Man until he is destroyed. After the judgment is complete, all that will remain is a child of God who is governed solely by the Holy Spirit. Never again will the person sin.
Peter described the Day of the Lord this way:
2Pet 3:10 But the Day of the Lord will come as a thief in the night; in the which the heavens shall pass away with a great noise, and the elements shall melt with fervent heat, the earth also and the works that are therein shall be burned up.
When Christ come to a fallen away believer with the Latter Rain of the Spirit, He comes as a thief in the night. He comes as a thief in the night because He comes at a time when we are dwelling in "darkness" and He comes to us unexpectedly (suddenly). When He comes, He destroys our "heaven and earth" (our spiritual makeup
within us which produces the Old Man) through judgment. But from that destruction, Christ will create a New Heaven and Earth" within us (a child of God). This is conversion.
Rev 21:1 And I saw a new heaven and a new earth: for the first heaven and the first earth were passed away; and there was no more sea.
The spiritual term "sea" represents mankind, the place where we dwell. After all is complete, mankind will no longer exist (no more sea) because we have all been destroyed and "born again". At that time, we will dwell in the house of the Lord forever.