2 Samuel 20:8
When they were at the great stone which is in Gibeon, Amasa went before them. And Joab’s garment that he had put on was girded unto him, and upon it a girdle with a sword fastened upon his loins in the sheath thereof; and as he went forth it fell out.
Cross-reference
2 Samuel 20:5
Historical context
2 Samuel 20:5 shows Amasa's delay, setting the stage for Joab's lethal deception here.
2 Samuel 3:30
Parallel
In 2 Samuel 3:30, Joab kills Abner treacherously—mirroring his deceitful murder of Amasa in 2 Samuel 20:8.