In Sumerian Holy Werks ideas and comments are often repeated three times so as to clearly emphasize integral points and add to the rhythmic effect. Often the relevant concept is stated in slightly different ways to highlight the symbolism and timeless qualities represented in the particular Ṇ·t̄ā.
The Ægyptian Ṇ·t̄ā also often would use a triple-repetition for some Sacred effects.
In the Ægean languages there is a word Τριπλόος (~Triploos) which means Thrice-Repeated, also used in Sacred Werkings, as well as formal occasions such as victory Celebrations and the like.
The occurrence of this
It is intriguing to note the wide spread "Tell-Me-Three-Times" motif codified into modern digital parlance and praxis. Robert Heinlein in his book, the Number of the Beast mentions in passing a "Rule of Three" for Fault Tolerance: described as the computer putting information that needs to be stored with assured security in triple-redundant storage, and when the computer needs something definitively authenticated, it acts in "tell-me-three-times" mode. In the fields of Artificial Intelligence and Robotics, Extensive simulations provide the basis for mathematical models of the relationship between types of uncertainties and plan success, utilizing current heuristics such as those including "tell me three times" structures. The "tell me three times" subroutines are often used as part of an 'undetected error' rate correction increase.
Some Dyslexia coping mechanisms have been developed using this three-fold repetition. In some Parliamentary systems, the passage of a law requires three readings.
And, naturellement, from Lewis Carroll's:
Hunting of the Snark
"Just the place for a Snark!" the Bellman cried,
As he landed his crew with care;
Supporting each man on the top of the tide
By a finger entwined in his hair.
"Just the place for a Snark!" — I have said it twice:
That alone should encourage the crew.
"Just the place for a Snark!" I have said it thrice:
"What I tell you three times is true."