Here's how I understand it.
People "saved" during the trib years [I understand that to be AFTER our Rapture occurs] will be because of "faith"... and that "faith" will be
evidenced by certain works during that specific time frame (as shown, for example, in Matt25 [with v.40's "the least of these My brethren" being the believing remnant of Israel/Jews who are NOT the ones BEING "judged/separated" in this passage, but are the ones whom the "nations" either "BLESSED" [and thus will be "BLESSED" themselves (the SHEEP)],
or did NOT "bless" but instead "cursed"
by not "blessing"
[so will themselves be called, by our Lord, "ye CURSED"] at the time of His Second Coming
to the earth FOR the commencement of the promised and prophesied
earthly Millennial Kingdom, aka "the wedding FEAST/SUPPER," aka "the kingdom OF THE heavenS [that is,
on the earth, upon His "RETURN" there]"--
these [faithful Israel/Jews--the "WISE [-servants / -virgins plural]"]
will BE the ones DOING the "INVITING" to the promised and prophesied
earthly MK, DURING those trib years; ppl will have to either embrace or reject
their specific msg [Matt24:
14[26:13] DURING the trib (see also Rev7:9); Rev19:
9 [distinct from 19:7]; Matt22:8-14; etc...)