2 Samuel 20:5 - Ellicott's Commentary On The Whole Bible

He tarried longer. — No cause is assigned for this, and various conjectures have been made. The simplest explanation may be drawn from the fact that, in 2 Samuel 20:8, Amasa is met on his return at Gibeon. He had therefore gone quite out of the bounds of Judah into Benjamin, and had consumed more time in consequence of exceeding his instructions. The fact suggests great doubt of his fitness for the place David had promised him. Joab appears to insinuate (in 2 Samuel 20:11) that Amasa was not really loyal.