John Wesley on Deuteronomy 21:23

He is accursed of God - 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. And this curse is here appropriated to those that are hanged, to so signify that Christ should undergo this execrable punishment, and be made a curse for us, Gal 3:13, which though it was to come in respect to men, yet was present unto God. Defiled - Either by inhumanity towards the dead: or by suffering the monument of the man's wickedness, and of God's curse, to remain publick a longer time than God would have it, whereas it should he put out of sight, and buried in oblivion.