A testum or small earthen pot, is derived from test, or loosely, earth/earthen. Made from earth or ground.

Another word for ground is property. Property was passed on by a will to do so, called a 'will'. Hence, the testor as owner/willer of the property/foundation.

An earthen cup used to taste-test liquid. Words by relation. (TST)

Testi-mony is a foundation of principle.

To establish the 'ground' of a principle, or foundation of principle, a 'test' is thereby given. A 'toast' (TST) is given in testimony/foundation, by drinking from the testum as testament.

Testes establishes ones' own foundation. In that, there is warning not to 'spill your seed upon the ground'.

Choices.

A testum or small earthen pot, is derived from test, or loosely, earth/earthen. Made from earth or ground.

Another word for ground is property. Property was passed on by a will to do so, called a 'will'. Hence, the testor as owner/willer of the property/foundation.

An earthen cup used to taste-test liquid. Words by relation. (TST)

Testi-mony is a foundation of principle.

To establish the 'ground' of a principle, or foundation of principle, a 'test' is thereby given.

Testes establish foundation. There is warning not to 'spill your seed upon the ground'. Choices.