Just two commandments after the Sadducees had learned all 613 and could quote them all by number back to Jesus?
Sure, love God, love neighbor. But who is my neighbor? That is answered in Luke 10 by the parable of the Good Samaritan.The one who shows mercy is the neighbor.
Perhaps the hardest commandment of all is loving the neighbor when the neighbor is not lovable, showing mercy to those who do not show mercy. Yet this is the benchmark of Christianity, the "hinge" upon which all hangs.