David took three days to return from Aphek ( 1 Samuel 29:11) to Ziklag. The Amalekites, whom David had previously raided ( 1 Samuel 27:8), took advantage of the Philistines" and David"s absence to retaliate in the Negev and on Ziklag. They plundered both Philistine and Judahite territory ( 1 Samuel 30:16). When David and his men arrived back home, they discovered Ziklag empty of inhabitants and burned down. David joined his men in weeping over the tragedy that the enemies of God"s kingdom had caused (cf. Matthew 23:37). David"s supporters then turned on him and almost stoned him, giving him trouble on two fronts simultaneously. In his distress David, as usual, strengthened himself in the Lord by relying on Yahweh and inquiring of Him ( 1 Samuel 30:6-8). From the Psalm we know that David often did this by looking back on God"s past faithfulness, looking up in prayer, and looking forward with God"s promises in view. [source][source][source]
"David"s genius was his spiritual resilience." [1][source]
"Both David and Saul are portrayed as persons in deep crises of leadership, and both are deeply at risk. What interests us is the difference of response.... Saul seeks refuge in a medium [2]." [2][source]