The Writings, as they were referred to in the New Testament, were the poetic or wisdom books.  They include the Psalms, some written by David, but mostly ranging from the 10^th–4^th century BCE, and the Proverbs, ascribed to Solomon, ranging from the 9^th century–3^rd century BCE, as well as the Book of Job, from the 6^th century BCE.  Both the Psalms and Proverbs were written over a period of time, but they each have an author attributed to them, King David to the Psalms, and King Solomon to the Proverbs.  Job was not an Israelite, but his story was instructive to the Israelites.