Ellicott's Commentary for English Readers - 2 Samuel 3:27
(27) Aside in the gate.—The gateway was a customary place of conference in the East, and Joab there awaited Abner’s return; he then took him “aside” to some place of privacy, as the LXX. reads, “by the side of the gate.” On the phrase “fifth rib,” see Note on 2 Samuel 2:23. The reason for this cold-blooded and treacherous murder on the part of Joab is expressly said to be “for the blood of Asahel his brother;” but no doubt his revenge was quickened by jealousy. read more
John Dummelow's Commentary on the Bible - 2 Samuel 3:1-39
Abner is Treacherously Murdered by Joab3. Chileab] We read nothing more of him and he probably died as a child. In 1 Chronicles 3:1 he is called Daniel. Geshur] a kingdom on the border of Bashan, where Absalom afterwards took refuge (2 Samuel 13:37) It must not be confused with the Geshur of 1 Samuel 27:8.4. Adonijah] see 1 Kings 1.7. Rizpah] see 2 Samuel 21:8-11. Gone in unto my father’s concubine] According to Eastern ideas this was equivalent to laying claim to the throne: see 2 Samuel 12:8;... read more