then his brother’s widow is to come to him in the sight of the elders, pull his sandal off his foot, spit in his face, and reply, ‘So will it be done to the man who does not build up his brother’s house.’
Now in the past in Israel, one removed his sandal and gave it to another, in order to finalize the redemption and transfer of a matter. This was a legal transaction in Israel.
Boaz announced to the elders and all the people: “You are witnesses today that I have bought from Naomi all that belonged to Elimelech and all that belonged to Chilion and Mahlon.