Bridgeway Bible Commentary - Deuteronomy 21:1-23
Respect for human life (21:1-23)Murder made the land unclean, and the uncleanness could be removed only by the execution of the murderer (see Numbers 35:29-34). Where the murderer could not be found, the elders of the town nearest the place of the murder had to go to an unpolluted stream nearby and carry out the ritual slaughter of a young cow instead of the unknown murderer. The blood of the cow washed away in the stream symbolized the removal of uncleanness caused by the unlawful bloodshed... read more
Albert Barnes' Notes on the Whole Bible - Deuteronomy 21:18-21
The formal accusation of parents against a child was to be received without inquiry, as being its own proof. Thus the just authority of the parents is recognized and effectually upheld (compare Exodus 20:12; Exodus 21:15, Exodus 21:17; Leviticus 20:9); but the extreme and irresponsible power of life and death, conceded by the law of Rome and other pagan nations, is withheld from the Israelite father. In this, as in the last law, provision is made against the abuses of a necessary authority. read more