te.u.dah names a testimony kept with instruction or a customary act confirming a matter.

Its dominant attested use is a testimony associated with instruction: in Isaiah it is bound up and treated as a standard for speech. A separate occurrence identifies a customary act used to confirm a matter as the testimony in Israel.

1. Testimony joined to instruction · dominant

   In Isaiah 8:16, the absolute singular noun occurs in the command to bind up the testimony among disciples; the APB renders the clause "Bind up the testimony; seal the instruction among my disciples." In Isaiah 8:20, it stands with instruction as the stated measure for whether people speak according to the word; the APB renders "To the instruction and to the testimony."

   Isaiah 8:16Isaiah 8:20
2. Confirming customary act · common

   In Ruth 4:7, the absolute singular noun occurs after the description of a man giving his sandal to a neighbor to confirm a matter. The APB renders the concluding clause, "this was the testimony in Israel."

   Ruth 4:7

In the Anselm Project Bible: The APB uses "testimony" in all three verses, pairing it with instruction in Isaiah and identifying the sandal-giving custom in Ruth. These renderings confirm the clauses' presentation rather than isolate every contribution of the noun.