What can the reason be, that at each temptation He adds this, “If Thou be Son of God?” Much the same as he did in that former case, he doth also at this time. That is, as he then slandered God, saying, “In the day ye eat, your eyes shall be opened;”thereby intending to signify, that they were beguiled and overreached, and had received no benefit; even so in this case also he insinuates this same thing, saying, “in vain God hath called Thee Son, and hath beguiled Thee by His gift; for, if this be not so, afford us some clear proof that Thou art of that power.” Then, because Christ had reasoned with him from Scripture, he also brings in a testimony of the prophet.