1 Samuel 18:10

he prophesied The word "prophesy" describes an ecstatic condition due to supernatural influence good or evil:the result in the one case being prophetic inspiration or religious enthusiasm: in the other raving madness. See on 1 Samuel 10:5.

and there was a javelin in Saul's hand Render, And the spear was in Saul's hand. The spear served as a sceptre, and was the symbol of royalty. The King held it in his hand when he sat in council (1 Samuel 22:6) or in his house (1 Samuel 19:9); it was kept by his side when he sat at table (1 Samuel 20:33); stuck in the ground by his pillow as he slept in camp (1 Samuel 26:7). Compare the modern Arab practice. "We recognised the Sheikh's tent, among a group of twenty others of which the encampment consisted, by the tall spear planted against it." Tristram, Land of Israel, p. 259.