Deuteronomy 25

5-10. the wife of the dead shall not marry without unto a stranger: her husband's brother . . . shall take her to him to wife--This usage existed before the age of Moses ( Genesis 38:8 ). But the Mosaic law rendered the custom obligatory ( Matthew 22:25 ) on younger brothers, or the nearest kinsman, to marry the widow ( Ruth 4:4 ), by associating the natural desire of perpetuating a brother's name with the preservation of property in the Hebrew families and tribes. If the younger brother declined to comply with the law, the widow brought her claim before the authorities of the place at a public assembly (the gate of the city); and he having declared his refusal, she was ordered to loose the thong of his shoe--a sign of degradation--following up that act by spitting on the ground-- the strongest expression of ignominy and contempt among Eastern people. The shoe was kept by the magistrate as an evidence of the transaction, and the parties separated.

13-16. Thou shalt not have . . . divers weights--Weights were anciently made of stone and are frequently used still by Eastern shopkeepers and traders, who take them out of the bag and put them in the balance. The man who is not cheated by the trader and his bag of divers weights must be blessed with more acuteness than most of his fellows [ROBERTS]. (Compare Proverbs 16:11 , 20:10 ).

17-19. Remember what Amalek did--This cold-blooded and dastardly atrocity is not narrated in the previous history ( Exodus 17:14 ). It was an unprovoked outrage on the laws of nature and humanity, as well as a daring defiance of that God who had so signally shown His favor towards Israel.