“the Anakim.” The Anakim were descendants of Anak, who was one of the Nephilim (Num. 13:33), and thus they were related to the Rephaim, the descendants of Rapha (cp. Deut. 2:11. The fact that Nephilim remained in the Philistine area explains why Goliath of Gath was there during David’s time. (Cp. Josh. 11:22; 2 Sam. 21:16, 18, 20, 22).
[For more on the Nephilim, see commentary on Gen. 6:4.]