Albert Barnes Commentary 1 Chronicles 12:8

"And of the Gadites there separated themselves unto David to the stronghold in the wilderness, mighty men of valor, men trained for war, that could handle shield and spear; whose faces were like the faces of lions, and they were as swift as the roes upon the mountains;" — 1 Chronicles 12:8 (ASV)

Into the hold to the wilderness - Rather, “into the hold toward the wilderness.” Some understand by this Ziklag, some En-gedi (1 Samuel 24:1–2); but it seems most probable that here and in 1 Chronicles 12:16 the stronghold of Adullam is intended (1 Chronicles 11:15–16).