NET
13 So Saul died because he was unfaithful to the Lord and did not obey the Lord’s instructions; he even tried to conjure up underworld spirits.
Darby
13 And Saul died for his unfaithfulness which he committed against Jehovah, because of the word of Jehovah which he kept not, and also for having inquired of the spirit of Python, asking counsel of it;
KJV
13 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 enquire [of it];