2 Samuel 13:37 records Absalom fleeing to Geshur after killing Amnon — Joab now brings him back from that same exile.

2 Samuel 13:38 says Absalom stayed in Geshur three years — Joab brings him back after that period.

2 Samuel 15:8 has Absalom recalling his vow while in Geshur — connects to his return in this verse.

2 Samuel 3:3 identifies Geshur as Absalom's maternal grandfather's territory — explains why Absalom was exiled there.

1 Chronicles 3:2 lists Absalom as David's son, with his mother from Geshur — the same place Joab brought him from.