ta.phash describes a heart that has become unresponsive in the contrast of Psalm 119:70.

The sole attested use describes a heart that has become unresponsive, contrasted with the speaker’s delight in instruction in Psalm 119:70.

1. Become unresponsive in heart · dominant

   In Psalm 119:70, the Qal perfect form occurs in the clause about “Their heart”; the APB renders the clause, “Their heart has become insensitive like fat,” before contrasting the speaker’s delight in instruction.

   Psalm 119:70

In the Anselm Project Bible: In Psalm 119:70, the APB presents the clause as “Their heart has become insensitive like fat.” This rendering confirms the clause’s overall contrast rather than isolating every contribution of the Hebrew form.