John 6:39-40;44;54 "And this is the Father's will which has sent me, that of all which he has given me I should lose nothing, but should raise it up again at the last day. And this is the will of him that sent me, that every one which sees the Son, and believes on him, may have everlasting life: and I will raise him up at the last day. No man can come to me, except the Father which has sent me draw him: and I will raise him up at the last day.  Whoso eats my flesh, and drinks my blood, has eternal life; and I will raise him up at the last day."

Four times in this one passage Jesus stressed that those who are His disciples will be raised up from the dead...when? He said "at the Last Day". Could Jesus have been more clear than that? No. So, if this true (and it is because Jesus said it) then it is very important for us to understand what He meant by “the last day”.

 The Apostle Paul wrote "Now we beseech you, brethren, by the coming of our Lord Jesus Christ, and by our gathering together unto him, That you be not soon shaken in mind, or be troubled, neither by spirit, nor by word, nor by letter as from us, that the day of the Lord is at hand (2 Thessalonians 2:1-2 ).

These verses are about Jesus' Second Coming which Paul calls "the day of the Lord" and I contend that the “day of the Lord” that Paul mentions is the same day as the "Last Day" that Jesus spoke about.

1 Thessalonians 4 is where the classic teaching on the Rapture is found and the Thessalonians apparently felt that Christians who had died would miss out on Second Coming of Lord. So, they needed some instruction on doctrine of the resurrection of the saints, therefore this passage is mostly about the Resurrection.

In 1 Thessalonians 4, the Resurrection is inseparably linked to the Second Coming and the Rapture is inseparably linked with the Resurrection. Paul says that those who have died in Christ will be resurrected, not raptured and those who are still alive at the Second Coming will be raptured, not resurrected.

According 1 Thessalonians 4, Christians are raptured at the same time as those who died in the faith are raised from the dead, which according to Jesus happens when? On the Last Day.

If words mean anything at all, then the “last day” Jesus spoke of means that there will be no other days after that final, last day. The phrase the “Last Day” means exactly what it says: it is the last day. The reason it is called the last day is because it is also the Day that the Heavens and the Earth are replaced with an eternal New Heaven and a New Earth. 

2 Peter 3:10-13 says: "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.  Seeing then that all these things shall be dissolved, what manner of persons ought all of you to be in all holy conversation and godliness, Looking for and hasting unto the coming of the day of God, wherein the heavens being on fire shall be dissolved, and the elements shall melt with fervent heat? Nevertheless we, according to his promise, look for new heavens and a new earth, wherein dwells righteousness."

When does Peter say that this will happen? He says it will happen on the "Day of the Lord" or at the Second Coming, the Last day, the Day of God. It all happens on the same Day which goes by a few different names.

2 Thessalonians 1:6-8 says: "Seeing it is a righteous thing with God to recompense tribulation to them that trouble you; And to you who are troubled rest with us, when the Lord Jesus shall be revealed from heaven with his mighty angels, In flaming fire taking vengeance on them that know not God, and that obey not the gospel of our Lord Jesus Christ:"

This is what is called the Day of Judgment and it must happen on the Last Day since there are no other days after the last day.

2 Corinthians 5:10 says “For we must all appear before the judgment seat of Christ; that every one may receive the things done in his body, according to that he hath done, whether it be good or bad”.

1 John 4:17 says : "In this is our love made perfect, that we may have boldness in the day of judgment: because as he is, so are we in this world.

Matthew 12:36 says  "But I say unto you, That every idle word that men shall speak, they shall give account thereof in the day of judgment."

2 Peter 2:9 says: "The Lord knows how to deliver the godly out of temptations, and to reserve the unjust unto the day of judgment to be punished:"

2 Peter 3:7 says  "But the heavens and the earth, which now are, by the same word are kept in store, reserved unto fire against the day of judgment and destruction of ungodly men."

Jude 1:6 "And the angels who kept not their first estate, but left their own habitation, he has reserved in everlasting chains under darkness unto the judgment of the great day."

The Apostle John described this Final Day of Judgment by saying that Jesus is going to sit upon His throne of judgment and men will either be judged unto righteousness or judged unto condemnation (Revelation 20:11-15). We must continue to warn people of God's Judgment Day, His "D-Day", right up until the very end, even as Noah did, so that some might heed our warning and come into the Ark of God which is Jesus Christ and be saved.

For Christians, the judgment of this world is not a reason to fear because God has promised that those who are His children are not children of wrath and are not subject to His judgment; “For God hath not appointed us to wrath, but to obtain salvation by our Lord Jesus Christ” (1 Thessalonians 5:9).

For Christians there will be no more suffering, no more pain, no more sorrow, only joy in the eternal presence of a good and loving God in the New Heaven and New Earth.

We are looking forward to the Last Day and to the time of His Second Coming when God will once again bring man into His Paradise called the New Heaven and New Earth thereby bringing the ultimate redemption of mankind and the world.  “Even so, come, Lord Jesus” (Rev. 22:20).