Now

This word is used here to mark a break in the main story line. Here the author tells about a new person in the story.

Zeruiah

See how you translated this man's name in 2 Samuel 2:13.

This means Joab discerned or understood what David was thinking.

This means that Joab sent someone with a message to Tekoa and had him bring back a woman to him. This can be written in active form. AT: "sent someone with a message to Tokoa and had him bring a wise woman back" (See: rc://en/ta/man/translate/figs-metonymy and rc://en/ta/man/translate/figs-activepassive)

This refers to someone who has died, not dead people in general. AT: "someone who has died" (See: rc://en/ta/man/translate/figs-nominaladj)