Albert Barnes Commentary 2 Samuel 16:5

"And when king David came to Bahurim, behold, there came out thence a man of the family of the house of Saul, whose name was Shimei, the son of Gera; he came out, and cursed still as he came." — 2 Samuel 16:5 (ASV)

Bahurim - See the note for 2 Samuel 3:16. It seems to have lain off the road on a ridge (2 Samuel 16:13), separated from it by a narrow ravine, so that Shimei was out of easy reach though within hearing and a stone’s throw (2 Samuel 16:6, 9).

Shimei, the son of Gera - In the title to Psalm 7, he is apparently called “Cush the Benjamite.” On Gera, see the note for Judges 3:15.