Is accursed of God, i.e. he is in a singular manner cursed and punished by God's appointment with a most shameful kind of punishment, as this was held among the Jews and all nations; and therefore this punishment may suffice for him, and there shall not be added to it that of lying unburied, which was another great calamity, Jeremiah 16:4. And this curse is here appropriated to those that are hanged, partly because this punishment was inflicted only upon the most notorious and public offenders, and such as brought the curse of God upon the community, as Numbers 25:4 2 Samuel 21:6; and principally to foresignify that Christ should undergo this execrable punishment, and be made a curse for us, Galatians 3:13, which though it was yet to come in respect to men, yet was present unto God, and in his eye at this time. And so this is delivered with respect unto Christ, as many other passages of Scripture manifestly are. Be not defiled, to wit, morally; either by inhumanity towards the dead; or rather by suffering the monument or memorial of the man's great wickedness, and of God's curse, to remain public and visible a longer time than God would have it, whereas it should be put out of sight, and buried in oblivion.
Related Commentaries of Deuteronomy 21:23
Deuteronomy 21:23
23 His body shall not remain all night upon the tree, but thou shalt in any wise bury him that day; (for he that is hanged is accursedc of God;) that thy land be not defiled, which the LORD thy God giveth thee for an inheritance.