20:6 said to Abishai. Though Amasa is proving unsatisfactory, David is still unwilling to reinstate Joab (19:13), so he addresses Joab’s brother Abishai instead. By the end of the episode, however, Joab will have retaken his former position, regardless of David’s wishes (vv. 13, 23).
your lord’s servants. They are called “Joab’s men” in v. 7.