Saul failed the nation spiritually - their sad loss was to remain unreplaced until David took the throne.
Rich, foolish Nabal's refusal in the face of established custom, made him as being rightly named. Or nicknamed? His name means "fool". His repeated use of the word "my" in 1 Samuel 25:11 reminds us of the other rich 'fool' in Luke 12:18-20.
David did not touch Saul, and left all in God's hands. Affronted by Nabal's refusal and insults, David was prepared to take everything into his own hands and kill (1 Samuel 25:10-13 ). It is so with us - we can recognize the greater temptation and fall before the
lesser.
Abigail's example:
Abigail's prudent action saved David from "grief", "offence", and "bloodshed without cause" - actions unbecoming to the future "ruler over Israel." (1 Samuel 25:30 KJV).
Note David's full acceptance, his repentance and thanksgiving to the Lord for using Abigail (1 Samuel 25:32-35 ). Those who deal unrighteously with God's servants can be left in His hands (1 Samuel 25:36-38 ).
Righteous actions will be followed by God's rewarding.
Sad that the chapter ends with polygamy, which was to cause great misery in the royal house (1 Samuel 25:43-44 ).
David's polygamy was not provided for in the law - significantly Saul's renewed persecution followed (1 Samuel 25:43 to 26:3 ). There is a lesson behind every chastisement (Hebrews 12:10 ). God is faithful in His governmental dealings with us.
The worst about another should not be believed until it is checked out.
When someone is delivered supernaturally into our hand it is wrong to assume its for destruction.
Going into Saul's camp and out again taking Saul's spear and jug of water was through supernatural intervention.
David recognised this divine assistance was for convincing grace, and not for judgment.
Pride of high office can blind to personal vulnerability (1 Samuel 26:13-16 ).
Abner, the general of Saul's army so despised David and his men, that he did not keep awake, or, it seems, set proper guard - David rightly charged him with neglect (1 Samuel 26:13-16 ). Pride of position can make such office-bearers presumptuous.
David's well presented plea gave Saul opportunity to reconsider - Saul makes more promises (1 Samuel 26:21 ), but he will prove unable to keep them because they are not accompanied with true repentance. Even when it is known that a Saul kind of heart is
being appealed to, the effort must be made.
David would not stretch out his hand against Saul (1 Samuel 26:22-24 ) because his heart was after God. Even enemies recognize that "he who humbles himself will be exalted" (Luke 14:11 ). Saul's last words are in the form of a blessing of David (1
Samuel 26:25 ), in which rightly David placed no confidence - and went his way - Saul faced the fact that David would prevail.
4.12. PRUDENT ACTION (1 Samuel 25:1-44)
4.12.1. TO LOSE SPIRITUAL LEADERSHIP IS INDEED AN OCCASION FOR NATIONAL LAMENTATION
1 Samuel 25:1 "And Samuel died; and all the Israelites were gathered together, and lamented him, ..."
4.12.2. WHEN GIFT MINISTRY PROVIDES FOR OUR NEEDS -THANKFULNESS WILL MAKE US CONTRIBUTORS TO THE NEED OF THE ONE USED
4.12.3. PRUDENCE PRACTICED UNDER GREAT TESTING CAN FAIL IN A LESSER TEST
1 Corinthians 10:12 "Therefore let him who thinks he stands take heed lest he fall."
4.12.4. WISE ACTION WILL SAVE ANOTHER FROM FALLING

Wise in listening (1 Samuel 25:14-17 ). 
Prudent action (1 Samuel 25:18-23 ). 
Careful explanation (1 Samuel 25:24-25 ). 
Wise counsel (1 Samuel 25:26 ). 
Perceptive insight (1 Samuel 25:27-31 ).
1 Samuel 25:26 "... since the Lord has held you back from coming to bloodshed and from avenging yourself with your own hand, ..."
4.12.5. GOD CAN PROMOTE LEADERS WHO THANKFULLY RECEIVE WISE COUNSEL
1 Samuel 25:38 "And it came to pass about ten days after, that the LORD smote Nabal, that he died."
1 Samuel 25:39,42 "So when David heard that Nabal was dead, ... David sent and proposed to Abigail, to take her as his wife.42 ... and she followed the messengers of David, and became his wife."
4.13. PLEADED CAUSE (1 Samuel 26:1-25)
4.13.1. CHASTISEMENT WILL FOLLOW DOING WHAT IS NOT PROVIDED FOR IN GOD'S WORD
4.13.2. CHANGE OF MIND WITHOUT CHANGE OF HEART WILL NOT PREVENT REPEATED FAILURE
1 Samuel 26:2 "Then Saul arose, and went down to the wilderness of Ziph, ... to seek David in the wilderness of Ziph."
"How soon do unsanctified hearts lose the good impressions which their convictions have made upon them, and return with the dog to their vomit." Matthew Henry
1 Samuel 26:4 "David therefore sent out spies, and understood that Saul was come ..."
"David recognised sovereignty over the life of Saul, and believed that God would remove him from office in His own perfect time" Ryrie
1 Samuel 26:12 "... a deep sleep from the LORD was fallen upon them."
1 Samuel 26:14 "... "Who are you, calling out to the king?""
4.13.3. A CAUSE WELL PLEADED CAN GIVE FURTHER OPPORTUNITY FOR TRUE REPENTANCE
4.13.4. DESIRE FOR VENGEANCE HAS NO PLACE IN THE LIFE OF A PERSON DEVOTED TO GOD