1 Then there was a famine in the days of David three years, year after year; and David inquired of the LORD. And the LORD answered, It is for Saul, and for his bloody house, because he slew the Gibeonites. 2 And the king called the Gibeonites, and said unto them; (now the Gibeonites were not of the children of Israel, but of the remnant of the Amorites; and the children of Israel had sworn unto them: and Saul sought to slay them in his zeal to the children of Israel and Judah.) 3 Wherefore David said unto the Gibeonites, What shall I do for you? and wherewith shall I make the atonement, that ye may bless the inheritance of the LORD? 4 And the Gibeonites said unto him, We will have no silver nor gold of Saul, nor of his house; neither for us shalt thou kill any man in Israel. And he said, What ye shall say, that will I do for you. 5 And they answered the king, The man that consumed us, and that devised against us that we should be destroyed from remaining in any of the coasts of Israel, 6 Let seven men of his sons be delivered unto us, and we will hang them up unto the LORD in Gibeah of Saul, whom the LORD did choose. And the king said, I will give them. 7 But the king spared Mephibosheth, the son of Jonathan the son of Saul, because of the LORD's oath that was between them, between David and Jonathan the son of Saul. 8 But the king took the two sons of Rizpah the daughter of Aiah, whom she bare unto Saul, Armoni and Mephibosheth; and the five sons of Michal the daughter of Saul, whom she brought up for Adriel the son of Barzillai the Meholathite: 9 And he delivered them into the hands of the Gibeonites, and they hanged them in the hill before the LORD: and they fell all seven together, and were put to death in the days of harvest, in the first days, in the beginning of barley harvest. 10 And Rizpah the daughter of Aiah took sackcloth, and spread it for her upon the rock, from the beginning of harvest until water dropped upon them out of heaven, and suffered neither the birds of the air to rest on them by day, nor the beasts of the field by night. 11 And it was told David what Rizpah the daughter of Aiah, the concubine of Saul, had done. 12 And David went and took the bones of Saul and the bones of Jonathan his son from the men of Jabesh-gilead, which had stolen them from the street of Beth-shan, where the Philistines had hanged them, when the Philistines had slain Saul in Gilboa: 13 And he brought up from thence the bones of Saul and the bones of Jonathan his son; and they gathered the bones of them that were hanged. 14 And the bones of Saul and Jonathan his son buried they in the country of Benjamin in Zelah, in the sepulchre of Kish his father: and they performed all that the king commanded. And after that God was intreated for the land. 15 Moreover the Philistines had yet war again with Israel; and David went down, and his servants with him, and fought against the Philistines: and David waxed faint. 16 And Ishbi-benob, which was of the sons of the giant, the weight of whose spear weighed three hundred shekels of brass in weight, he being girded with a new sword, thought to have slain David. 17 But Abishai the son of Zeruiah succoured him, and smote the Philistine, and killed him. Then the men of David sware unto him, saying, Thou shalt go no more out with us to battle, that thou quench not the light of Israel. 18 And it came to pass after this, that there was again a battle with the Philistines at Gob: then Sibbechai the Hushathite slew Saph, which was of the sons of the giant. 19 And there was again a battle in Gob with the Philistines, where Elhanan the son of Jaare-oregim, a Bethlehemite, slew the brother of Goliath the Gittite, the staff of whose spear was like a weaver's beam. 20 And there was yet a battle in Gath, where was a man of great stature, that had on every hand six fingers, and on every foot six toes, four and twenty in number; and he also was born to the giant. 21 And when he defied Israel, Jonathan the son of Shimea the brother of David slew him. 22 These four were born to the giant in Gath, and fell by the hand of David, and by the hand of his servants.
[AD 420] Jerome on 2 Samuel 21:2-9
The Gibeonites met the children of Israel, and although other nations were slaughtered, they were kept for hewers of wood and drawers of water. And of such value were they in God’s eyes that the family of Saul was destroyed for the wrong done to them. Where would you put them? Among the goats? But they were not slain, and they were avenged by the determination of God. Among the sheep? But holy Scripture says they were not of the same merit as the Israelites. You see then that they do indeed stand on the right hand but are of a far inferior grade.

[AD 1781] Richard Challoner on 2 Samuel 21:8
Of Michol: They were the sons of Merob, who was married to Hadriel: but they are here called the sons of Michol, because she adopted them, and brought them up as her own.
[AD 407] John Chrysostom on 2 Samuel 21:17
Entreat God—for this cause entreat him. It is in our behalf indeed that it is done, but it is wholly for your sakes. For we [spiritual leaders] are appointed for your advantage, and for your interests we are concerned.…For our enemy is violent. For each of you indeed anxiously thinks of his own interests, but we [think of] the concerns of all together. We stand in the part of the battle that is pressed on. The devil is more violently armed against us. For in wars too, the one who is on the opposite side endeavors before all others to overthrow the general. For this reason all his fellow combatants hasten there. For this reason there is much tumult, every one endeavoring to rescue him; they surround him with their shields, wishing to preserve his person. Hear what all the people say to David (I do not say this, as comparing myself to David, as I am not so mad, but because I wish to show the affection of the people for their ruler), “You shall go out no more; do not quench the lamp of Israel.” See how anxious they were to spare the old man. I am greatly in need of your prayers. Let no one, as I have said, from an excessive humility deprive me of this alliance and succor. If our part is well approved, your own also will be more honorable. If our teaching flows abundantly, the riches will redound to you.

[AD 430] Augustine of Hippo on 2 Samuel 21:17
At this point someone may say that the priests of God ought to flee from such threatening dangers in order to save themselves for the service of the church in more peaceful times. It is right for some to do this when others are not lacking to supply the ministry of the church, so that it is not wholly abandoned. This is what Athanasius did, as I said before; for the body of Catholic believers knew how necessary and how profitable it was for the church to retain in the flesh a man who had defended it by words and heart’s love against the Arian heretics. But when the danger is common to all and there is more reason to fear that the priest’s escape may be attributed to a dread of death rather than an intention of future help, and when he does more harm by the example of his flight than he would do good by his preservation, there is no justifiable reason for doing it. Finally, there was holy David, who did not trust himself to the dangers of battle lest the lamp of Israel, as it is there said, “should be put out”; but he did not take this course himself—he did it because his followers begged him to do it. Otherwise, he would have had many cowardly imitators who would believe that he acted thus at the bidding of his own fear, not for any motive of usefulness to others.

[AD 1781] Richard Challoner on 2 Samuel 21:19
Adeodatus the son of the Forrest: So it is rendered in the Latin Vulgate, by giving the interpretation of the Hebrew names, which are Elhanan the son of Jaare.