Group words in pairs and find connection with common answer.
Puzzling Stack Exchange is a question and answer site for those who create, solve, and study puzzles. It only takes a minute to sign up.Sign up to join this community
The pairs are:
TIME / IMMEMORIAL. In English law, "time immemorial" (as distinguished from historical time) actually has a formal ending date, in the year 1189.
LION / HEART. The year 1189 is when Henry II was replaced as king of England by Richard I, nicknamed "the Lionheart".
BIBLE / CHAPTERS. There are 1189 chapters in the (Protestant) Bible.
A0 / LENGTH. A sheet of A0 paper is 1189mm long.
SODIUM / ACTINIUM. Both elements, with atomic numbers 11 and 89 respectively.
MINOR / THIRD. The name of a musical interval, which in equal temperament corresponds to a frequency ratio of about 1.189.
SUM / SQUARES. The number 1189, being the product of two prime numbers that are 1 mod 4, is a sum of two squares (in two different ways). (For those who prefer more constructive proofs: it's 10^2+33^2 and 17^2+30^2.)
FINAL / REVELATION. The final chapter of the biblical book of Revelation is the 1189th chapter in the Bible. (This is really the same fact as for BIBLE CHAPTERS above, since Revelation is the last book of the Bible.)
So the common answer is clearly
It seems likely that
there's some particular reason why this is appropriate for New Year's Day of 2023 (given the title of the puzzle), and indeed David confirms in comments that there is, but I haven't yet figured out what it is.