Spear — It seems, as an ensign of majesty, for in old times kings carried a spear instead of a sceptre.
Related Commentaries of 1 Samuel 22:6
1 Samuel 22:6
6 When Saul heard that David was discovered, and the men that were with him, (now Saul abode in Gibeah under a treea in Ramah, having his spear in his hand, and all his servants were standing about him;)