「Erection within temple」describes the religious significance of the shaman's endeavors, purveyors of the nascence of humanity's religious experiences. Knowing the original elements makes the meaning of CONGRATULATIONS obvious, since「getting it up」for this activity might not occur as frequently for older folks. Elements formerly (壽) were「penis rolled, flesh seam and orifice/mouth array with squeezing grip, feel of pulsating and pumping fluids」that combine to create a fanciful image of a successful sexual encounter of most any variety possible. Given meanings have an obvious connection with the glyph meaning「old」(enlarged prostate of an old man due to insufficient use and lack of periodic drainage). Nevertheless, perhaps a different message is also contained herein, that of not using rented service providers of either sex, ewes, buddies, and so on for sexual release if one wants to attain OLD AGE, which is simply another way of saying not dying while young from contracting contagious infections or some other tragedy.
　This glyph,「prick, tallywacker」or「erection many times, many reciprocal motions of rod in a squeezing grip」depicts sexual release apparently either necessary for or supportive of LONGEVITY.
　Lower element of「a squeezing grip, careful hand」is also depicting the measuring of someone's pulse, which itself is feeling the throbbing pulsations of blood as it courses through arteries, and also a prick no less. Vaguely refers to「still being alive」so perhaps CONGRATULATE an old man for a LONG LIFE.
　「Erect rod in temple」for servicing a「virile prick」refers to the shaman and her religious acolytes in a temple of love, or, even just thinking about them while performing a selfie:「Frequent ejaculation may decrease prostate cancer risk…men who ejaculated 21 times or more a month were less likely to report prostate cancer at follow-up than those ejaculating four to seven times per month…」…or in other words, don't let your meat loaf.
　　[　https://www.ncbi.nlm.nih.gov/pmc/articles/PMC387502/ 2020-12-30　]　…but not all the pundits agree…we say,「it can't hurt to try」
　　[　https://www.fatherly.com/health/more-sex-ejaculation-masturbation-lower-prostate-cancer-risk　]　
　　[　https://www.mayoclinic.org/diseases-conditions/prostate-cancer/expert-answers/prostate-cancer/faq-20057800　]　
　「Evolutionary biologists have traced the origins of masturbation to ancient primates that predate the first humans by tens of millions of years. The findings emerged from what scientists believe is the largest dataset ever compiled on the activity, and confirm that humans arose on a branch of the tree of life replete with self-pleasuring predecessors. 'What we can say is this behaviour was present around 40m (40,000,000) years ago, in the common ancestor of all monkeys and apes,' said Dr Matilda Brindle, the lead researcher on the study at University College London. 'It's not that some species woke up one day and started doing it. This is an ancient, evolved trait.' '…This is such a common behaviour across the animal kingdom, I find it absolutely baffling that nobody has researched it before,' said Brindle. 'For people who think masturbation is wrong, or unnatural in some way, this is perfectly natural behaviour. It's part of our healthy repertoire of sexual behaviours.'」
　　[　https://www.theguardian.com/science/2023/jun/07/origins-masturbation-traced-back-primates-40m-years-ago　]　

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: long life; old age; age; life; birthday; funerary
Japanese: congratulations, felicitations, best wishes, longevity, long life, to congratulate, to wish one well
Unihan extended: old age, long life; lifespan
EDRDG: longevity; congratulations; one's natural life

Used within names (nanori)
かず　･　じ　･　じゅう　･　すっ　･　すみ　･　とし　･　としかつ　･　なが　･　のぶ　･　のり　･　ひさ　･　ひさし　･　やす