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1 Then came all the tribes of Israel to David unto Hebron, and spake, saying, Behold, we are thy bone and thy flesh. 2 Also in time past, when Saul was king over us, thou wast he that leddest out and broughtest in Israel: and the LORD said to thee, Thou shalt feed my people Israel, and thou shalt be a captain over Israel. 3 So all the elders of Israel came to the king to Hebron; and king David made a league with them in Hebron before the LORD: and they anointed David king over Israel. 4 David was thirty years old when he began to reign, and he reigned forty years. 5 In Hebron he reigned over Judah seven years and six months: and in Jerusalem he reigned thirty and three years over all Israel and Judah. 6 And the king and his men went to Jerusalem unto the Jebusites, the inhabitants of the land: which spake unto David, saying, Except thou take away the blind and the lame, thou shalt not come in hither: thinking, David cannot come in hither. 7 Nevertheless David took the strong hold of Zion: the same is the city of David. 8 And David said on that day, Whosoever getteth up to the gutter, and smiteth the Jebusites, and the lame and the blind, that are hated of David's soul, he shall be chief and captain. Wherefore they said, The blind and the lame shall not come into the house. 9 So David dwelt in the fort, and called it the city of David. And David built round about from Millo and inward. 10 And David went on, and grew great, and the LORD God of hosts was with him. 11 And Hiram king of Tyre sent messengers to David, and cedar trees, and carpenters, and masons: and they built David an house. 12 And David perceived that the LORD had established him king over Israel, and that he had exalted his kingdom for his people Israel's sake. 13 And David took him more concubines and wives out of Jerusalem, after he was come from Hebron: and there were yet sons and daughters born to David. 14 And these be the names of those that were born unto him in Jerusalem; Shammua, and Shobab, and Nathan, and Solomon, 15 Ibhar also, and Elishua, and Nepheg, and Japhia, 16 And Elishama, and Eliada, and Eliphalet. 17 But when the Philistines heard that they had anointed David king over Israel, all the Philistines came up to seek David; and David heard of it, and went down to the hold. 18 The Philistines also came and spread themselves in the valley of Rephaim. 19 And David inquired of the LORD, saying, Shall I go up to the Philistines? wilt thou deliver them into mine hand? And the LORD said unto David, Go up: for I will doubtless deliver the Philistines into thine hand. 20 And David came to Baal-perazim, and David smote them there, and said, The LORD hath broken forth upon mine enemies before me, as the breach of waters. Therefore he called the name of that place Baal-perazim. 21 And there they left their images, and David and his men burned them. 22 And the Philistines came up yet again, and spread themselves in the valley of Rephaim. 23 And when David inquired of the LORD, he said, Thou shalt not go up; but fetch a compass behind them, and come upon them over against the mulberry trees. 24 And let it be, when thou hearest the sound of a going in the tops of the mulberry trees, that then thou shalt bestir thyself: for then shall the LORD go out before thee, to smite the host of the Philistines. 25 And David did so, as the LORD had commanded him; and smote the Philistines from Geba until thou come to Gazer.
[AD 397] Ambrose of Milan on 2 Samuel 5:1
What more should I say? He did not open his mouth to those planning deceit, and, as though he did not hear, he thought no word should be returned, nor did he answer their reproaches. When he was spoken of evilly, he prayed. When he was cursed, he blessed. He walked in simplicity of heart and fled from the proud. He was a follower of those unspotted from the world, one who mixed ashes with his food when bewailing his sins, and mingled his drink with weeping. Worthily, then, was he called for by all the people. All the tribes of Israel came to him, saying, “Behold, we are your bone and your flesh. Also yesterday and the day before when Saul lived, and reigned, you were he that led out and brought in Israel. And the Lord said to you, you shall feed my people!” And why should I say more about him of whom the word of the Lord has gone forth to say: “I have found David according to my heart” Who else always walked in holiness of heart and in justice as he did, so as to fulfill the will of God; for whose sake pardon was granted to his children when they sinned, and their rights were preserved to his heirs?

[AD 435] John Cassian on 2 Samuel 5:1
We find that the word flesh is used in holy Scripture with many different meanings: for sometimes it stands for the whole person, that is, for that which consists of body and soul, as here: “And the Word was made flesh,”? and “All flesh shall see the salvation of our God.” Sometimes it stands for sinful and carnal people, as here: “My spirit shall not remain in those men, because they are flesh.” Sometimes it is used for sins themselves, as here: “But you are not in the flesh but in the spirit,” and again, “Flesh and blood shall not inherit the kingdom of God.” Lastly there follows, “Neither shall corruption inherit incorruption.” Sometimes [as with David] it stands for unity and relationship, as here: “Behold we are your bone and your flesh,” and the apostle says, “If by any means I may provoke to emulation them who are my flesh, and save some of them.” We must therefore inquire in which of these four meanings we ought to take the word flesh in this place.

[AD 220] Tertullian on 2 Samuel 5:8
For (here is one of Marcion’s antitheses): whereas David long ago, in the capture of Zion, was offended by the blind who opposed his admission (into the stronghold). In this respect (I should rather say) that they were a type of people equally blind, who in later times would not admit Christ to be the son of David. So, on the contrary, Christ helped the blind man to show, by this act, that he was not David’s son and how different in disposition he was, by being kind to the blind while David ordered them to be slain. If all this were so, why did Marcion allege that the blind man’s faith was of such a worthless type? The fact is, the Son of David acted so that the antithesis must lose its point by its own absurdity. Those persons who offended David were blind, and the man who now presents himself as a beggar to David’s son is afflicted with the same infirmity. Therefore the Son of David was appeased with some sort of satisfaction by the blind man when he restored him to sight, and added his approval of the faith which had led him to believe the very truth that he must gain the Son of David’s help by earnest entreaty. But, after all, I suspect that it was the audacity (of the old Jebusites) which offended David, and not their malady.

[AD 1781] Richard Challoner on 2 Samuel 5:13
David took more concubines and wives of Jerusalem: Not harlots, but wives of an inferior condition; for such, in scripture, are styled concubines.
[AD 397] Ambrose of Milan on 2 Samuel 5:19
After that [the killing of Goliath] he never entered on a war without seeking counsel of the Lord. Thus he was victorious in all wars, and even to his last years [he] was ready to fight. And when war arose with the Philistines, he joined battle with their fierce troops, being desirous of winning renown, while careless of his own safety. But this is not the only kind of fortitude which is worthy of note. We consider their fortitude glorious, who, with greatness of mind, “through faith stopped the mouth of lions, quenched the violence of fire, escaped the edge of the sword, out of weakness were made strong,” They did not gain a victory in common with many, surrounded by comrades and aided by the legions, but [they] won their triumph alone over their treacherous foes by the mere courage of their own souls.