testify — Wordorigins.org
www.wordorigins.org › big-list-entries › testifyTestify is a word with a straightforward etymology but one with a myth attached. The verb is a late fourteenth-century borrowing from the medieval Latin testificare, a later variant on the classical testificor. The Proto-Indo-European root is *trei, with a base meaning of three, and testify and related words come from the compound root *tri-st-i, meaning something like third person standing by, in other words a witness to the fact or truth.
Testimony and Testicles – The Oath of Abraham’s Servant
taylormarshall.com › 2008 › 10The testicles are the sign of Abraham’s descendants (they literally contained the “seed” that God had promised to bless in Genesis 15, 17, 22). By placing his hand there, the servant of Abraham made a solemn oath concerning the blessed progeny of Abraham. This association between testicles and testimony is not particularly Semitic or Jewish.