in the book of the law] That is, he wrote or caused the priests to write the words of this covenant in some copy of the law, written by Moses, Deuteronomy 31:26.
and set it up] To wit, as a sign or monument of this covenant thus ratified, as it was the custome of those dayes. Genesis 28:18. and 35. 14. Joshua 4:3.
an oak] Of which, see Judges 9:6. and Genesis 35:4.
by the sanctuary] 1: e. In Shechem neer the tabernacle, or in the outward court as it was now pitched.