Verse 2 is "[purporting] that the day of the Lord IS PRESENT [PERFECT indicative]" (not His Second Coming to the earth, but the very negative [aspects of that] time period's ARRIVAL which PRECEDES His Second Coming to the earth--not that the "false conveyors" grasped "timing issues" lol).
In 1Th5:2-3, Paul acknowledges that they "KNOW PERFECTLY" the manor of its ARRIVAL (DOTL), which he says is like the INITIAL "birth PANG [SINGULAR]" of a woman in labor... which is the EXACT WORD Jesus used (in the "plural") when He spoke of "the beginning of birth PANGS [PLURAL]"... (which are the EQUIVALENT of the SEALS in Rev6)... so Seal #1 (as we now know it) !
This brings me to the conclusion that the ARRIVAL of those (thus the ARRIVAL of "the DOTL" time-period) IS the INITIAL birth PANG [SINGULAR]" which JESUS SPOKE OF, which is: Matt24:4/Mk13:5 "G5100 - tis - 'A CERTAIN ONE' ['a certain one' bringing deception]" (i.e. SEAL #1 at the START of the trib... aka, what Paul spells out in 2Th2 re: the "whose COMING" [of the "man of sin"]<--"that day" [v.3] will NOT be present [without him and his "parousia / presence" ]--Same point in time as Dan9:27a [26b] "for ONE WEEK [7 yrs]")
In 1Th5:2-3, Paul acknowledges that they "KNOW PERFECTLY" the manor of its ARRIVAL (DOTL), which he says is like the INITIAL "birth PANG [SINGULAR]" of a woman in labor... which is the EXACT WORD Jesus used (in the "plural") when He spoke of "the beginning of birth PANGS [PLURAL]"... (which are the EQUIVALENT of the SEALS in Rev6)... so Seal #1 (as we now know it) !
This brings me to the conclusion that the ARRIVAL of those (thus the ARRIVAL of "the DOTL" time-period) IS the INITIAL birth PANG [SINGULAR]" which JESUS SPOKE OF, which is: Matt24:4/Mk13:5 "G5100 - tis - 'A CERTAIN ONE' ['a certain one' bringing deception]" (i.e. SEAL #1 at the START of the trib... aka, what Paul spells out in 2Th2 re: the "whose COMING" [of the "man of sin"]<--"that day" [v.3] will NOT be present [without him and his "parousia / presence" ]--Same point in time as Dan9:27a [26b] "for ONE WEEK [7 yrs]")