ziq.nah denotes the period of advanced age, marked in these verses by aging, weakness, or gray hair.

The term denotes advanced age as a stage of life. Its occurrences place that stage in contexts of gray hair, diminishing strength, illness, childbirth after aging, and events occurring during a person's later years.

1. Advanced age as a life stage · dominant

   Across the occurrences, the noun names the later stage of a person's life: in Psalm 71:9 the APB renders a plea not to be cast off when strength is finished, and in Psalm 71:18 it joins this stage with gray hairs. In 1 Kings 11:4 and 1 Kings 15:23, the construct form locates Solomon's changed heart and Asa's foot disease in that period; Genesis 24:36 and Isaiah 46:4 likewise place childbirth after aging and divine care through gray hairs in this setting.

   Psalm 71:9Psalm 71:181 Kings 11:41 Kings 15:23Genesis 24:36Isaiah 46:4

In the Anselm Project Bible: The APB consistently presents the term with “old age,” while Genesis 24:36 expresses the setting as having “grown old.” In Isaiah 46:4 and Psalm 71:18, “gray hairs” appears alongside the age reference.