So Amasa went to summon Judah, but he delayed beyond the set time that had been appointed him.
We have here Amasa's fall just as he began to rise. He was nephew to David (Sa2 17:25), had been Absalom's general and commander-in-chief of his rebellious army, but, that being routed, he came over into David's interest, upon a promise that he should be general of his forces instead of Joab.
Commenting on 2 Samuel 20:4-13
So Amasa went to assemble the men of Judah,.... To gather, them together out of their several tribes, and bring them to Jerusalem: but he tarried longer than the set time which he had appointed him: than the three days; whether this was owing to the remissness of Amasa, or the unwillingness of the people to serve under him, who had been Absalom's general in...
2Sa 20:5-6 But when Amasa stayed out beyond the time fixed for the execution of the royal commission (the Chethib וייחר is the Piel וייחר, whilst the Keri is either the Hiphil ויּוחר, or the imperfect Kal of יחר = אחר, cf.
Commenting on 2 Samuel 20:5-6