Abigail was the wife of Nabal; she became a wife of David after Nabal's death (1 Samuel 25). Abigail is David's third wife, after Saul's daughter, Michal, whom Saul later married to Palti, son of Laish when David went into hiding and Ahinoam. David and Abigail by Antonio Molinari.
Who was Michal? Michal was the younger daughter of King Saul and Ahinoam. Michal became the first wife of David after David killed two hundred Philistines for her hand in marriage. Saul had intended for David to be killed, not to be victorious. “When Saul realized that the Lord was with David and how much his daughter Michal loved him, Saul became even more afraid of him, and he remained David's enemy for the rest of his life.” 1 Samuel 18:28-29 (NLT)