John Mark
Mark 12:31BSB·traditional attribution

The second is this: ‘Love your neighbor as yourself.’ No other commandment is greater than these.”

Matthew Henry Presbyterian @wholebiblehenry

The scribes and Pharisees were (however bad otherwise) enemies to the Sadducees; now one would have expected that, when they heard Christ argue so well against the Sadducees, they would have countenanced him, as they did Paul when he appeared against the Sadducees (Act 23:9); but it had not the effect: because he did not fall in with them in the ceremonials of religion, he...

Commenting on Mark 12:28-34

John Gill Reformed Baptist @doctorgill

And to love him with all the heart,.... That is, the one God, with a sincere hearty love and affection; and with all the understanding; of his being, perfections, and works, which will serve to draw the affections to him: this clause answers to that, "with all thy mind", in Mar 12:30; and with all the soul; with all the powers and faculties of it...