John Gill Commentary 2 Chronicles 17:11

"And some of the Philistines brought Jehoshaphat presents, and silver for tribute; the Arabians also brought him flocks, seven thousand and seven hundred rams, and seven thousand and seven hundred he-goats." — 2 Chronicles 17:11 (ASV)

Also some of the Philistines brought Jehoshaphat presents and
tribute silver
Perhaps those of Gerar, and the parts adjacent, Asa took and spoiled, and made tributary, (2 Chronicles 14:14) ,

and the Arabians brought him flocks, seven thousand and seven hundred
rams, and seven thousand and seven hundred he goats ;
with which their country abounded; and these might be the Scenite Arabs, who fearing lest Jehoshaphat should fall upon them, and take away their flocks as his father had done, (2 Chronicles 14:15) , brought these presents to him.