John Wesley on Deuteronomy 32:6

O foolish people and unwise! - Fools and double fools! Fools indeed, to disoblige one, on whom you so entirely depend! Who hath bewitched you! To forsake your own mercies for lying vanities! Bought thee - That hath redeemed thee from Egyptian bondage. Made thee - Not only in a general by creation, but in a peculiar manner by making thee his peculiar people. Established - That is, renewed and confirmed his favour to thee, and not taken it away, which thou hast often provoked him to do.