Charles H. Spurgeon on Psalms 81:10

The custom is said still to exist in Persia that when the king wishes to do a visitor, an ambassador for instance, especial honour, he desires him to open his mouth wide; and the king then crams it as full of sweetmeats as it will hold; and sometimes even with jewels. Curious as this custom is, it is doubtless referred to in Ps 81:10: Open thy mouth wide, and I will fill it; not with baubles of jewels, but with far richer treasure. John Gadsby.