And Jesus answering said unto him, It is said, Thou shalt not tempt the Lord thy God. It is remarkable that in these crowning instances of temptation, which no doubt were originally recounted by the Lord himself to the inner circle of the disciples, and from them passed into the regular course of instruction adopted by the Christian teachers of the first days, the Redeemer, in each of his three answers to the devil, uses words taken from two chapters (the sixth and eighth) of Deuteronomy.
It has been suggested that the thoughts and expressions of this book were fresh in the mind of the tempted Christ, as he had probably, specially during his sojourn in the wilderness, used for his own study and meditation a book which told the story of Israel's wanderings in the desert for forty years.
It seems, however, more likely that the Lord simply chose to frame his answers from a book with which every Israelite from his earliest yearn had been acquainted. The maxims and precepts of Deuteronomy were used in the education of every Hebrew child.
Its devout and beautiful maxims were written on the phylacteries or frontiers which so many pious Jews were in the habit of wearing.