Hi Lupac,
This is from the article 'Exposing the "Secret Rapture" to give you a little insight into "the day of the Lord."
http://bible-truths.com/rapture.htm ------------
According to Eph. 4:1-5, how many "Gods" are there? "ONE God and Father of all ..." (Ver 5). How many "Lords" are there? "... ONE Lord ..." (Ver 5). Is someone seriously going to suggest that it is only in the "CONTEXT" of these verses that there is ONE God and ONE Lord?
Yes, there is but ONE God and ONE Lord--in this "context" or in ANY context! And, if one insists on "contexts," then also in this context there is but: "ONE body and ONE spirit, according as you were called also with ONE expectation of your calling; ONE Lord, ONE faith, ONE baptism, ONE God and Father of all, Who is over all and through all and in all" (Eph. 4:4-5)!
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And absolutely Paul uses this expression in association with the day of the Lord. In I Thes. 4:16 Paul says that Christ will return "with the trumpet of God." In I Cor. 15:52 Paul tells us that Christ will return "at the last trump." And Paul associates Christ coming with "the day of the Lord" (I Thes. 5:2). "The day of the Lord" (II Thes. 2:2). The Thessalonians receive "rest and ease," along with Paul, "at the unveiling of the Lord Jesus" (II Thes. 1:7).
It is the unveiling that ushers in the day of the Lord. Likewise, the same resurrection mentioned in I Cor. 15:51-52 will take place, "in the DAY OF OUR LORD" (I Cor. 1:08). I have already conclusive proven that "the day" and "the day of the Lord:" of I Thes. Chapter 5 are one and the same day (See again argument #4).
At Christ’s second coming He gathers His elect and sets up His kingdom. Twice Paul tells us that the elect will be gathered at the sound of a trumpet (I Thes. 4:16), at the last trump (I Cor. 15:52), and it is then when the saints (ALL the saints, I Thes.3:13) will receive their "rest and ease" from the trials and sorrows of this life, and Paul plainly says that this will occur: "... AT the unveiling of the Lord Jesus from heaven with His powerful messengers, in flaming fire, dealing out vengeance to those who are not acquainted with God and those who are not obeying the evangel of our Lord Jesus Christ--who shall incur the justice of eonian extermination from the face of the Lord, and from the glory of His strength--whenever He may be coming to be glorified in HIS SAINTS and to be marveled at in ALL WHO BELIEVE (seeing that our testimony to you was believed) IN THAT DAY"
Now this is not hard to follow. The above is Paul’s description of how Christ will return for "all who believe." He comes in power and glory and is dealing out vengeance to the ungodly and is being glorified in His saints. This same description of His second coming is found in Rev 11:15-18, "... And loud voices occurred in heaven, saying, ‘The kingdom of this world became our Lord’s and His Christ’s and He shall be reigning for the eons of the eons. Amen!’... Thou hast taken Thy great power and does reign. And the nations are angered, and Thy indignation came, and the era for the dead to be judged, and to give their wages to thy slaves, the prophets, and to the SAINTS and to those fearing Thy name, the small and the great ..." And when does this occur? Verse 1: "And the seventh messenger trumpets."!
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mercy, peace and love
Kat