ya.tsu.a denotes a bed or resting place, including a father’s bed in accounts of its violation.

The attested uses chiefly concern a bed or place of rest, as in preparing a bed in darkness and refusing to go up to one’s bed; two passages specifically place it in the phrase “your father’s bed,” where that bed is said to have been profaned or defiled.

1. Bed or place prepared for rest · dominant

   In Job 17:13 the plural construct form occurs where the APB renders, “if I spread my bed in darkness,” and Psalm 132:3 places the term in the clause rendered “the couch of my bed.” Psalm 63:7 also has a plural construct form, though the APB’s rendering about singing in the shadow of God’s wings does not isolate the term’s contribution.

   Job 17:13Psalm 132:3Psalm 63:7
2. A father’s bed in a violated relationship · common

   In Genesis 49:4, the singular construct form occurs in the accusation that someone “went up to your father’s bed” and “defiled it.” In 1 Chronicles 5:1, the plural construct form appears in the corresponding report that Reuben “profaned his father’s bed.”

   Genesis 49:41 Chronicles 5:1

In the Anselm Project Bible: The APB presents the term with “bed” in Job 17:13, Genesis 49:4, and 1 Chronicles 5:1, and with “couch of my bed” in Psalm 132:3. In Psalm 63:7, its contribution is not apparent in the translation.