The Lord Jesus Christ will descend from heaven with a shout with the voice of the archangel (to wake the dead in Christ) - this is the rapture: 1 Thessalonians 4:15-18.
At this time:
In God's final dealing with apostate man, Christ is sent, as the Judge.
Do you have peace in this fact?
The assurance is established in six elements, outline in Gospel of John
The authority of the Bible is the foundation. If you do not accept the Bible as being the solid - the truth and foundation you will never have peace.
The sole foundation of peace is Christ's work. There is absolutely nothing man can do to gain peace with God - "For by grace you have been saved through faith, and that not of yourselves: it is the gift of God, not of works, lest anyone should boast (Ephesians 2:8, 9).
Christ makes peace with God, though his sacrificial death. "Having made peace through the blood of His (Christ's) cross" - Col 1:20. Because of this we CAN have peace.
Knowing that Christ died for my sins requires one attribute - belief. "For God so loved the world that He gave His only begotten Son, that whosoever believes in Him should not perish but have everlasting life".
If you believe this, then I tell you that you have "settled" peace with God. He demands nothing more. "Therefore being justified by faith (and you say you do believe), we have peace with God through our Lord Jesus Christ". To do so you will confess that you are a sinner, admitted you need a saviour, and sought forgiveness from the Lord Jesus Christ.
Do you enjoy this settle peace? A constant peace in your soul is by faith. "..Whoever confesses that Jesus us the Son of God, God abides in him, and he in God" (1 John 4:15).
We have peace when we have acknowledged our sin, admitted we needed forgiveness, and asked Jesus Christ to save us, believing that Christ paid the penalty for our sins.
"And by this we know that He (Jesus) abides in us, by the Spirit who He has given us" (1 John 3:24). Further, no one can say that Jesus is Lord "except by the Holy Spirit" (1 Corinthians 12:3). We know its the Holy Spirit (not some other) because the Bible says "you know the Spirit of God: Every spirit that confesses that Jesus Christ has come in the flesh (ie as a man) is of God" (1 John 4:2).
The Spirit is the "guarantee" (Ephesians 1:14) that we have had our sins paid for (by Christ).
Faith cannot be just "lip service", while "doing things" or works, is not faith. The Bible says "Now by this we know Him, if we keep His commandments" (1 John 2:3). Keeping his commandments will not save us - the entire Old Testament proves this - "the heart is deceitful above all things, And desperately wicked". He who says he doesn't sin is a liar - hence sins! - 1 John 1. Our love for Christ leads us to obey him. If you are worried about your faith, apply the test - "Do I keep God's commandments?" (Faith without works, is dead" (James 2:17)). BUT REMEMBER - "if we confess our sins, He is faithful and just to forgive us our sins and to cleanse us from all unrighteousness" (1 John 1:9).
"My little children let us not love in word or in tongue, but in deed and in truth. And by this we know that we are of the truth, and shall assure our hearts before Him" (1 John 3:18,19).
We love because he first loved us. "By this we know love, because He laid down His life for us" (1 John 3:16).
A believer (Christian, saint, saved soul) has perceived his wretched state before God, confessed his sins (repented), accepted Christ's atoning sacrifice, by faith, and is assured by the Holy Spirit HE or SHE is SAVED. Salvation is from eternal separation from God - in Hell. The Christian is reborn when his or her sins are washed away by Christs blood. They are to be "remembered no more".