King Saul appeared to have had a "born again" experience:
9 When he turned his back to leave Samuel, God gave him another heart. And all these signs came to pass that day. 10 When they came to Gibeah, behold, a group of prophets met him, and the Spirit of God rushed upon him, and he prophesied among them. [1 Samuel 10:9-10 ESV]
But then we are told the following:
14 Now the Spirit of the Lord departed from Saul, and a harmful spirit from the Lord tormented him. [1 Samuel 16:14 ESV]
15 Then Samuel said to Saul, “Why have you disturbed me by bringing me up?” Saul answered, “I am in great distress, for the Philistines are warring against me, and God has turned away from me and answers me no more, either by prophets or by dreams. Therefore I have summoned you to tell me what I shall do.” 16 And Samuel said, “Why then do you ask me, since the Lord has turned from you and become your enemy? 17 The Lord has done to you as he spoke by me, for the Lord has torn the kingdom out of your hand and given it to your neighbor, David. 18 Because you did not obey the voice of the Lord and did not carry out his fierce wrath against Amalek, therefore the Lord has done this thing to you this day. 19 Moreover, the Lord will give Israel also with you into the hand of the Philistines, and tomorrow you and your sons shall be with me. The Lord will give the army of Israel also into the hand of the Philistines.” [1 Samuel 28:15-19 ESV]
4 Then Saul said to his armor-bearer, “Draw your sword, and thrust me through with it, lest these uncircumcised come and thrust me through, and mistreat me.” But his armor-bearer would not, for he feared greatly. Therefore Saul took his own sword and fell upon it. 5 And when his armor-bearer saw that Saul was dead, he also fell upon his sword and died with him. 6 Thus Saul died, and his three sons, and his armor-bearer, and all his men, on the same day together. [1 Samuel 31:4-6 ESV]
Did King Saul lose his salvation?