Therefore the kinsman said unto Boaz, Buy it for thee.
So he drew off his shoe.
Ruth 4:8
One possibility of what the one shoe of Boaz could mean...which is signifying his redeeming of Ruth as a near kinsman.....could be- JUSTIFICATION?
And your
feet shod with the preparation of the gospel of peace;
Ephesians
6:15 KJV
If the "Gospel" is salvation-and we look to the sanctuary where the plan of salvation is laid out in 2 compartment (outer court / JUSTIFICATION & the inner court SANCTIFICATION)...then could it possibly be that by Boaz redeeming Ruth with one shoe is Christ redeeming us by JUSTIFICATION, which we cannot earn or buy?
SANCTIFICATION requires your co-operation in changing one's life. But JUSTIFICATION is freely offered to all who simply have to accept it. Just a thought....