God's Judgment Regarding King Saul

As a young man, Saul was humble and noble. But against his wishes the throne was thrust upon him, and its power corrupted him. His behavior grew more evil year after year, until he was consumed by paranoia and completely unfit to lead.

Saul's rejection of the LORD grew and progressed all through his time as king. He began as a faithful and courageous leader, but soon valued military power above the LORD's blessing — a clear attitude of idolatry. After that, he rebelled openly, disobeying God's plain instructions. This increased to blatant opposition as Saul murdered the LORD's priests and spent the rest of his life trying to murder innocent David. In the end, Saul became completely irrational and insane.

1 Chronicles 10:13-14   So Saul died for his transgression which he committed against the LORD, even against the word of the LORD, which he kept not, and also for asking counsel of one that had a familiar spirit, to inquire of it; And inquired not of the LORD: therefore he slew him, and turned the kingdom unto David the son of Jesse.