Only be strong and very courageous, to observe to do according to all the law, which Moses my servant commanded you: don't turn from it to the right hand or to the left, that you may have good success wherever you go.
RUTH: Where is the implication that the Pentateuch was in existence and well known in Ruth?  The whole book is founded on the practical application of the law of Levirate marriage, and down to the very ceremony of "drawing off the shoe," we are looking at the Pentateuchal background in every line of it!