[
@selahsays 's Post #55]
All of the following marks the START / ARRIVAL of
"the day of the Lord" earthly-located time period (
aka TRIB-aspect):
--Paul says in 1Th5:1-3, that the DOTL's ARRIVAL is "exactly like" the INITIAL "birth PANG [singular]" that comes upon a woman with child (not at the END of those abundance of "birth pangs," see); Paul is referring to that which JESUS had spoken of in His Olivet Discourse;
--the INITIAL one
of those that Jesus listed (of "the BEGINNING of birth pangs [plural]") is:
"A CERTAIN ONE [G5100 - tis]," i.e. "A CERTAIN ONE"
bringing deception ("For there shall be MANY..." but
ONE IN PARTICULAR is the one that "kicks off" that specific, future, limited time-period we commonly call the TRIB [the ARRIVAL and 7-yr aspect of "the DOTL" time-period in its entirety], i.e. 7-yr period
leading up to Christ's "return"
to the earth at Rev19; v.2's "false claim" was concerning THIS, purporting that it "IS PRESENT");
--"the BEGINNING of birth pangs" ARE the "SEALS" of Rev6, so the INITIAL ONE
of those birth pangs or Seal #1 is: the rider of the white horse with a "BOW" ('bow' often meaning 'deception'...
aka the AC / man of sin, at the "kick-off" point of the 7-yr period);
--the "
whose COMING / ARRIVAL / ADVENT / PRESENCE /
PAROUSIA" of the man of sin "IN HIS TIME" (2Th2:9a; 2Th2:6);
--[which
likewise corresponds with] Daniel 9:27
a's "FOR ONE WEEK [7 yrs]" (when he will "confirm the covenant with the many" at the START of that future 7-yr period);
All of this (and more) is the biblical evidence that "the DOTL" (the Subject of the "false claim" in v.2) was about the false claimants "purporting that the Day of the Lord [the Tribulation aspect] IS PRESENT," in other words, had already started and had been playing out already for some amount of time (that includes ALL OF THE ABOVE, plus further "birth pangs" which follow on from that initial moment, as well).
This is what Paul was covering (his "corrective" to such a "false claim"--he's not wanting them to be deceived by).
Also, there is no evidence that the "false claimants" (of whatever stripe, in whatever form, Paul says) had access to Paul's first letter to the Thessalonians and had supposedly BASED their false claim on anything that Paul had written therein, either (not that I agree that anything in his first letter says what you're suggesting it does--I do not).