One may wonder what approach the Pharisees believed would effectively tempt the Lord. It seems unlikely they anticipated any other response from Christ than the one He provided. To explore this further, we might consider how Jesus, after responding to the lawyer, poses a question to the Pharisees. Through this, He reveals that the Messiah is not only David’s offspring, as they believed, but also the Son of God. Thus, it is plausible that the Pharisees recalled Christ’s declaration of Himself as the Son of God, which they viewed as blasphemy, since they believed in the oneness of God (Jn. 10:33).
They likely anticipated that regarding the greatest commandment in the law, the Lord would insist upon faith and self-love as the requirements from the Son of God (Jn. 6:28-29). Had Christ responded in this manner, the Pharisees would have labeled Him a blasphemer and violator of the law before the people. Instead, the Lord begins by affirming the unity of God (Mk.), followed by emphasizing love for God as the foundation and essence of the moral law, and love for one’s neighbor as a necessary extension of love for God (cf. 1 Jn. 4:20-21).