I'm not arguing any math equations either way, mind you, but I'm not sure how you can say the sentence in bold ^ , above.
I can think of at least 12 random things off the top of my head that (in the gospels) speak to His Second Coming to the earth and the circumstances that will surround that:
--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], [also Romans 16:20 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 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)
--ALL "there shall be weeping and gnashing of teeth" passages
--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) 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)
… I'm pretty sure there's tons more than just these (how's that for "maths" LOL)
I can think of at least 12 random things off the top of my head that (in the gospels) speak to His Second Coming to the earth and the circumstances that will surround that:
--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], [also Romans 16:20 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 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)
--ALL "there shall be weeping and gnashing of teeth" passages
--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) 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)
… I'm pretty sure there's tons more than just these (how's that for "maths" LOL)
But I don't think that changes my initial assessment, that the estimate of 8 verses concerning the second coming for every 1 verse concerning the first coming is too high.