hang. hang up: i.e. after putting to death, not to put to death by hanging.
a tree. timber: i.e.. wooden stake. Compare Joshua 8:29; Joshua 10:26; Joshua 10:27; Galatians 1:3; Galatians 1:13.
Related Commentaries of Deuteronomy 21:22
Deuteronomy 21:22
22 And if a man have committed a sin worthy of death, and he be to be put to death, and thou hang him on a tree: