Discovery Box2 Samuel 5:8 
Context5:8 David said on that day, “Whoever attacks the Jebusites must approach the ‘lame’ and the ‘blind’ who are David’s enemies 1 by going through the water tunnel.” 2 For this reason it is said, “The blind and the lame cannot enter the palace.” 3
2 Samuel 20:15
Context20:15 So Joab’s men 4 came and laid siege against him in Abel of Beth Maacah. They prepared a siege ramp outside the city which stood against its outer rampart. As all of Joab’s soldiers were trying to break through 5 the wall so that it would collapse,
2 Samuel 23:16
Context23:16 So the three elite warriors broke through the Philistine forces and drew some water from the cistern in Bethlehem near the gate. They carried it back to David, but he refused to drink it. He poured it out as a drink offering to the Lord
1 tc There is some confusion among the witnesses concerning this word. The Kethib is the Qal perfect 3cp שָׂנְאוּ (sanÿ’u, “they hated”), referring to the Jebusites’ attitude toward David. The Qere is the Qal passive participle construct plural שְׂנֻאֵי (sÿnu’e, “hated”), referring to David’s attitude toward the Jebusites. 4QSama has the Qal perfect 3rd person feminine singular שָׂנְאָה (sanÿ’ah, “hated”), the subject of which would be “the soul of David.” The difference is minor and the translation adopted above works for either the Kethib or the Qere.
2 tn The meaning of the Hebrew term has been debated. For a survey of various views, see P. K. McCarter, II Samuel (AB), 139-40.
sn If a water tunnel is in view here, it is probably the so-called Warren’s Shaft that extends up from Hezekiah’s tunnel. It would have provided a means for surprise attack against the occupants of the city of David. The LXX seems not to understand the reference here, translating “by the water shaft” as “with a small knife.”
3 tn Heb “the house.” TEV takes this as a reference to the temple (“the Lord’s house”).
4 tn Heb “they.” The following context makes it clear that this refers to Joab and his army.
5 tc The LXX has here ἐνοοῦσαν (enoousan, “were devising”), which apparently presupposes the Hebrew word מַחֲשָׁבִים (makhashavim) rather than the MT מַשְׁחִיתִם (mashkhitim, “were destroying”). With a number of other scholars Driver thinks that the Greek variant may preserve the original reading, but this seems to be an unnecessary conclusion (but see S. R. Driver, Notes on the Hebrew Text and the Topography of the Books of Samuel, 346).
