Samekh (Samech) is the 15th letter in the Hebrew aleph-beyt. It's gematria value is 60, which reduces 6, the letter Vav.
I love to look for the alphanumeric connections for better understanding and deeper meaning. Names and dates can be extremely enlightening as well, if applicable.
In Hebrew numerology, the number 15, represents three "three fives." The Hebrew letter "Hey" (ה) represents the number 5 and is often linked to "behold" and "reveal" and concepts like grace, favor, and redemption. Repeating a number in Hebrew numerology can emphasize its meaning, so "three fives" signifies a stronger emphasis on the concept associated with the number 5.
Repeating 5 three times amplifies the concepts associated with 5, potentially representing a heightened level of divine blessing or intervention.
There is a fascinating connection between 15 and 60 in the Priestly Benediction. In the Priestly Blessing there are fifteen words and sixty letters. When the Kohen blesses the people, he must put his hands together. According to the Mishnah , there are thirty bones in each hand, sixty when the hands are joined.
BY DESIGN
The design of the samech is a closed circle. The letter Samech is one of the only two fully closed letters of the Hebrew alphabet, the other being the letter mem sofit (in final form).
A circle represents infinity, because it has no beginning or end. In Kabbalah, the samech represents the infinite power of the Ein Sof, G‑d’s infinite light.
The samech also resembles a wedding band. The Giving of the Torah at Sinai “was the betrothal ceremony” when G‑d gave us the ring, our wedding band, the Torah.
The root word of the letter Samekh means “to uphold, support, or lean on.” Samech stands for soolam (סוּלָם), meaning ‘ladder’, a key symbol in Jewish mysticism (Kabbalah), referring to one’s inner journey. The letter SAMECH is a symbol of support and protection.
The word samech סמך is an acronym for: salach סלח,to forgive; mechal מחל,to pardon; and kaper כפר, to atone. "When one takes strides to forgive, pardon and atone, one achieves a great spiritual healing.
A Chassidic Rabbi's Teaching on the letter Samech
It is always helpful to refer to Psalm 119 for a deeper understanding of a Hebrew letter. Pastor David Guzik does a very good Judeo-Christian teaching on Samech in Psalm 119.
https://www.chabad.org/library/article_cdo/aid/137087/jewish/Samech.htm
