Because he both lost his design against David's life, and had now paved a way for him to the throne.
Related Commentaries of 1 Samuel 18:29
1 Samuel 18:29
29 And Saul was yet the more afraid of David; and Saul became David's enemy continually.
Because he both lost his design against David's life, and had now paved a way for him to the throne.
29 And Saul was yet the more afraid of David; and Saul became David's enemy continually.