Besides the Matthew 24:3 / Matthew 13:[24]30,39,40,49-50 when the angels will "reap" point, above...
^ … and along those same lines, here are at least 12 other kinds of contexts that go alongside that same [future] point in time (His Second Coming to the earth FOR the earthly MK age [NOT our Rapture, which is other contexts separate from these references]):
--ALL "Son of man cometh/coming/shall come/etc" passages
--"the kingdom of the heavens" (the promised and prophesied EARTHLY Millennial Kingdom)
--"the wedding FEAST/SUPPER" passages (ditto the above; referred to in a few different passages)
--the "G347 - shall sit down [around a table / at a meal]" of Matt8:11 and its parallel
--the entire Olivet Discourse (except for the section of Lk21:12-24a about the events of 70ad), so Matt24-25/Mk13/Lk21
--the "IN QUICKNESS [NOUN]" references of Lk18:8[chpt-17-end] "avenge IN QUICKNESS [NOUN]," [also Romans 16:20 (distinct LOCATION, same time-frame) and Rev1:1/22:6] (specific limited future time period leading UP TO the earthly MK, which will commence at His Second Coming to the earth)
--"the end [singular] of the age [singular]" in Matthew 13:24,30,39,40,49-50 (also Matt24:3 and His response); as well as "the age [singular] to come" which follows the other, sequentially, but found in Matt12:32 (the MK) located in the text before the Matt13 passage
--the two "RETURN" passages of Luke 12:36-37,38,40,42-44 "when he will RETURN FROM the wedding..." THEN the meal;and Luke 19:12,15,17,19 "RETURN," when He will deal out responsibilities regarding "have thou authority over 10 cities" and "likewise... be thou over 5" (and the parallels to these; see also Rev2:26-27, Rev19:15b ["SHALL [future] shepherd them [the nations]..."], Rev20:4, etc)
--ALL "there shall be weeping and gnashing of teeth" passages (for those not entering the earthly MK time period, as ALL "saints/the righteous" WILL be present and accounted FOR, to enjoy)
--the "ye [the 12] shall sit on 12 thrones, judgING the 12 tribes of Israel" (Lk22:30,16,18 and Matt19:28 [compare with Matt25:31-34 for TIMING: His 2nd Coming to the earth])
--about eight to TEN "BLESSED" passages in the gospels [correlating with Dan12:12's "BLESSED" (specific time slot ["Blessed is he that waiteth and cometh to the 1335 days"]--referring to "still-living" persons, at the time of His Second Coming to the earth) and Rev19:9's "BLESSED" both/all pertaining to their entrance into the promised and prophesied earthly Millennial Kingdom, commencing upon His RETURN to the earth at the time of His Second Coming to the earth]
--the Transfiguration (a picture of His Second Coming glory)
...pretty sure there are more
(all connected)… Jesus spoke of it plenty throughout the gospels (whereas SOME things it was necessary to remain "hidden" until AFTER His crucifixion [1Cor2:7-8; John 16:13-15])