1st Samuel 18:10 And it came to pass on the morrow, that the evil spirit from God came upon Saul, and he prophesied in the midst of the house: and David played with his hand, as at other times: and there was a javelin in Saul's hand.
[Patriarchs & Prophets pp 650] One great defect in the character of Saul was his love of approbation. This trait had had a controlling influence over his actions and thoughts; everything was marked by his desire for praise and self-exaltation. His standard of right and wrong was the low standard of popular applause. No man is safe who lives that he may please men, and does not seek first for the approbation of God. It was the ambition of Saul to be first in the estimation of men.
And when this song of praise was sung, a settled conviction entered the mind of the king that David would obtain the hearts of the people and reign in his stead. Saul opened his heart to the spirit of jealousy by which his soul was poisoned. Notwithstanding the lessons which he had received from the prophet Samuel, instructing him that God would accomplish whatsoever He chose, and that no one could hinder it, the king made it evident that he had no true knowledge of the plans or power of God.
The monarch of Israel was opposing his will to the will of the Infinite One. Saul had not learned, while ruling the kingdom of Israel, that he should rule his own spirit. He allowed his impulses to control his judgment, until he was plunged into a fury of passion. He had paroxysms of rage, when he was ready to take the life of any who dared oppose his will. From this frenzy he would pass into a state of despondency and self-contempt, and remorse would take possession of his soul.
1st Samuel 18:12 And Saul was afraid of David, because the Lord was with him, and was departed from Saul. 13 Therefore Saul removed him from him, and made him his captain over a thousand; and he went out and came in before the people.
May The Lord add His blessing to the study of His word. God bless!